Emanuela Pollarola/Story

==Meeting Youto==
Two years prior to the start of the series, Emi was part of a church choir. Her personality led her to be perceived as a troublesome rascal by those around her, as she struggled to make friends and were often scolded.
At some point, Emi finds a rabbit on a high wall in the church's backyard and helps it get off. This dirties her outfit and causes her to be late to choir, earning her a scolding from a nun. Emi would run off and return to the backyard, where she meets Yokodera Youto, a middle schooler at the time, who thanks Emi for taking care of the rabbit. Seeing her cry, Youto volunteers to be her ally, marking the start of their daily hangouts. Though constantly maintaining a tsundere attitude, she opens up about her personal struggles with time. At one point, Youto promises to take her to a high school sports festival.
Around this time, Emi asks Youto his preferences are for younger girls, to which he answers "someone with twin tails, who talks in unclear expressions and in third person, and who would say 'I love Onii-chan'." Emi briefly tries to adjust herself to fit this image but fails, unable to pull it off.
When Emi moves away from Japan for two years, Youto's sacrifice of his memories to the Cat God eventually leads him to forget about Emi, and the next time they meet would be in Youto's second year of high school.
==Reunion==
After being separated from Youto for two years, Emi becomes entangled in a complicated plot by the Cat God and is sent back to Japan. Her father now works there as a university professor specializing in Japanese culture.
Upon arrival, Emi is approached by the Cat God, who is possessing Azuki Azusa. The Cat God gives her a cat plush and tells her about a girl Youto liked, who possesses a "100% smile." It offers to grant Emi any wish, starting with granting her such a smile that would appeal to Youto.
By the Cat God's powers, Emi is transformed to match Youto's ideal image. Yet unaware of Youto's loss of memories, Emi excitedly approaches Youto while he walks to school with Tsutsukakushi Tsukiko. She leaps at him but slips, landing on his face. Clinging to Youto and callin him "Onii-chan," Emi's "100% smile" granted by the Cat God instantly charms Youto. Confused and slightly irritated by the sudden intimacy, Tsukiko questions who she is, but Youto has no idea.
Seeing this, Emi whispers to the cat plush she carries, wishing for something to help her situation. In the next instant, Youto's childhood friend Ponta appears, introducing Emi as his younger sister. He explains that Emi is interested in observing their upcoming sports festival and asks Youto to show her around the school. Youto reluctantly agrees, while Tsukiko decides to leave. Despite still having no recollection of past friendships, Youto begins to take a liking to Emi, feeling that her "100% smile" is all he needs.
Arriving at school, Youto decides to climb the back wall with Emi in order to avoid the front gate. After clearing it, he is immediately spotted by the vice president of his club, who scolds him harshly. He runs away with Emi and ends up in the track-and-field clubroom. Realizing Youto is treated poorly at school and deciding that things are not fun this way, Emi pulls out the cat plush again and wishes that everyone were nice to Youto, that everyone felt more like going to the pool, and that everyone and the school were more interesting.
The Cat God’s power is invoked, and the school undergoes a dramatic transformation. The vice president becomes inexplicably friendly with Youto, the school buildings are transformed into Italian landmarks, the students change out of their uniforms and into swimsuits, and they begin treating Youto like a "prince."
Youto convinces Emi to go visit the Steel King while he meets up with Tsukiko to discuss the situation. Tsukushi welcomes her to join her intensive track-and-field club training, which leaves Emi exhausted. Later, after being rejoined by Youto along with Tsukiko, Emi spots Azusa in the distance. Fearing the Cat God, Emi decides to go home for the day.
As suspicions grow, Youto takes Tsukiko and Tsukushi to his house to look through old photos. However, they fail to find any photos of "Ponta's younger sister." This leads Youto to realize that Ponta never had a younger sister, and that this false belief is linked to Emi's wish to the Cat God. Tsukiko and Tsukushi both warn Youto to be cautious around Emi, but when Youto later speaks with Azusa, she dismisses their concerns, believing everyone is overthinking the situation.
At lunchtime, Emi meets up with Youto again. They find Tsukiko singing along to a play she's practicing by herself for the children's welfare club, but having lost her ability to express emotions, it sounds fairly flat. Emi steps in and sings a little herself and asks why Tsukiko doesn't put any emotion into her singing, playing with her face. Tsukiko is a little perturbed by this, and she and Emi start arguing about who is better at various things. Eventually, they both claim to be better at sports, prompting Emi to suggest a swimming contest to settle the argument.
Both changing into swimsuits, they dive in as the race starts. Immediately, Emi changes from racing mode to fun mode and begins plays around. Tsukiko, on the other hand, is practically drowning. They reach the end at about the same time. Deciding she's had enough fun, Emi cancels her wish making everyone want to go to the pool. Naturally, this means that everything generated by the wish also disappears, including the swimsuits everyone's wearing. Tsukiko runs aways to change. 
Now alone, Emi and Youto talk by the pool. Youto asks her, if she's satisfied with the other wishes, to cancel them as well. Emi is surprised that Youto knows about her wishes. He then reveals that he also knows she was once a member of a church choir. Emi, believing that Youto has finally remembered their past, starts talking excitedly. However, Youto interrupts, saying that while he remembers that much, he doesn't understand why she wants to spend time with him of all people.
In response, Emi grabs Youto and jumps into the pool. She shares how, when she was younger, she had an Onii-chan who promised to take her to the sports festival. As a child, she treasured that memory, even if an adult might have forgotten it. Youto, understanding the importance of cherished memories, compares it to how he values the backlog in eroge and says he knows how precious they can be. Hearing this, Emi makes Youto promise to take her to the sports festival, saying that after that, she'll give up on her wishes.
On the day of the sports festival, Youto confronts Emi with a discovery he made on the church choir's website: a video message from Emi saying she was looking forward to going to the sports festival with "Onii-chan." Youto offers to help her as best as he can, believing the "Onii-chan" she referred to is someone else. Hearing this, Emi finally gives up. She takes out the cat plush, cancels all of her wishes, and throws it into the distance.
With her wishes undone, Emi begins acting like her true self, revealing a sharp-tongued, tsundere personality as she calls Youto a "pumpkin." The ribbons Emi had been using to tie her signature twin tails — a result of her wish to appeal to Youto as a pure-hearted younger sister — disappear as well. As Emi ties her hair back with ordinary ribbons, she fires off several biting remarks, prompting Youto to realize that this brash, candid girl is who Emi has always been. Emi promises to exact her revenge and runs off, leaving Youto stunned.
Several days later, Emi returns to Youto's school to enact her revenge. She perches atop the Italian bell tower and tosses down embarrassing photos of Youto, threatening to destroy what little reputation he has left. Youto climbs the tower to confront her. Though Youto still doesn't remember too much about their shared past, he apologizes and vows to remember Emi anew and create new memories with her. Moved by his words, Emi gives Youto a warm hug. As the converse, Emi recounts her encounter with the Cat God after returning to Japan.
They are then confronted by the Cat God, possessing Azuki Azusa. Terrified, Emi hides behind Youto as the Cat God reveals the truth: the Italian school is actually a result of a wish from his childhood that he no longer remembers. The Cat God explains that canceling this wish would resolve the situation, but there is a catch. To fulfill Youto's childhood wish, the Stony Cat had to bring Emi to Japan. If the wish is canceled, Emi will be forced to return to Italy.
The situation grows even more chaotic when the Stony Cat corners Emi, pressuring her. In her fear, Emi impulsively "wishes" for the Cat to "get away from her." The Stony Cat grants her wish by walking ominously toward the balcony's edge, threatening to jump. Youto now faces an impossible choice: if he cancels his childhood wish, Emi will be sent back to Italy. If he does nothing, he risks losing Azusa entirely.
In a desperate measure, he cancels the wish, but before Emi is sent away, he kisses the possessed Azusa. The sudden and unexpected act leaves the Cat God confused and flustered, causing it to leave Azusa's body entirely.
With the incident resolved, Emi remains in Japan and begins spending time with Youto regularly. She maintains her true, tsundere self, while Youto works to learn more about Emi's personality and motivations and rebuild their former bond.
==Time Loop==
While around Youto, Emi repeatedly notices the presence of a hooded man who cryptically attempts to warn Youto about an impending disaster. Though Youto remains unaware of the man's identity, Emi eventually recognizes him as an alternate version of Youto from a different timeline.
Some time later, the world becomes trapped in a mysterious time loop, involving a familial "curse" that has begun to surface, causing Tsukiko's older sister, Tsukushi's health to rapidly decline. Tsukiko would be the only one to retain her memories across loops thanks to the notes she kept, thanks to a wish she made to remember everything in Youto's stead after previously discovering the true reason behind Youto's bad memories. However, despite Tsukiko's efforts, each time loop would end with Youto sacrificing his remaining lifespan to save Tsukushi's life.
In the third loop, Tsukiko reveals the truth of the loop to Youto and desperately pleads to Youto to not repeat the same tragedy. Despite her efforts, Youto's nature proves difficult to change, and the time loop ends in heartbreak once more. The time loop continues, and Tsukiko grows disheartened due to Youto's stubbornness, and acts increasingly colder towards him. In the 8th loop, she even pushes back black cat plush that he previously gifted her on her birthday, arguing that their relationship is not equal, because even though she wants to do something for Youto in return for what he has given her, he never listens, no matter what she says or does.
Later, Youto meets up with Emi at her church, where they discuss the presence of the familiar hooded man who seems to be watching them. The man reveals himself to be crying, explaining that the world is trapped in a time loop that Youto has failed to break, each time paying too great a sacrifice. In cryptic terms, he reveals himself to be another Youto from a past timeline who disregarded the same words of warning, asserting that the present Youto will be facing the same fate.
It reveals the truth of the time loop and the reason behind why she's able to retain her memories. Alas, the man bids farewell, urging Youto to tread down a different path than him. He stoops down as if praying for something, and turns to look at Emi with eyes filled with sadness, before finally walking away.
Later, Emi receives a call from his father, instructing him to tell Youto about Tsukushi's terminal illness and have him "do what he needs to do." Learning this, he stands up to face the hill with the cedar tree, where the cat statue resides. This prompts Emi to lets out a sigh, calling him an idiot for "going for another loop." Ordering Youto to listen to her, Emi suggests that they convince Tsukiko, or the loop will never end. However, Youto believes that there is no way for them to come to an understanding — he wants to do everything he can to save Tsukushi, and the fact that Tsukiko disapproves is a difference in lifestyle that cannot be mended.
Hearing this, Emi tells Youto to recall his hospital visit. Then, Tsukushi admitted that she wanted to end the curse of the bloodline with her generation, by living and dying as herself, free from the legacy of the Cat God. When Youto asked why she didn't tell anyone, she simply answered, "Because I am an Onee-san after all!", acting like a grownup.
Listening to Youto's relay of this exchange, Emi says that Tsukushi probably wanted an equal relationship, where her pain belongs to herself only. However, Youto objects, voicing his frustration, "You can't keep the pain to yourself and still say you're part of an equal relationship. Waiting for the other person is just—"
Youto stops when realizes the parallel between his own words and Tsukiko's, finally understanding her. With a sigh, Emi remarks on how long it has taken him to understand. Youto concurs, feeling truly deserving of his "pumpkin" title.
Despite this breakthrough, Youto realizes it has come too late — Tsukushi's illness worsens by the day, and he had already made Tsukiko angry. The current Youto is running out of time, but only the current him. Alas, he arrives at the decision to once again pray to the Cat God, restarting the loop once more. Before doing so, however, he entrusts Emi with a letter addressed to Tsukiko, expressing his true feelings, hopeful that they will be able to mend their relationship in the next cycle.
With the help of Emi, the Youto and Tsukiko eventually reconcile. Combining their efforts, they manage to find the cause of the time loop and break out of it by once again returning to the past, with the intent to rid the lineage of the "curse" from its root.
==New Timeline==
Despite challenges, Youto and Tsukiko succeed in finding the root cause of the "curse" — a belief held by Tsukasa in order to cope with her own declining health, which manifested in Tsukushi due to an inadvertent wish made as an expression of love for her mother. They also learn why Youto grew acquainted with the Tsutsukakushi family during his childhood — it was the result of Tsukasa's wish for a family in her most desperate and lonely times, which separated him from his actual family.
In the new timeline, Emi meets Youto after rescuing a rabbit that escaped from the animal training club at Youto's high school. They encounter each other at a nearby park, where Youto is searching for the rabbit on behalf of Azusa. Emi wears an ogre mask given to her by her father, who told her it would grant her transformative powers.
Youto treats Emi with playful teasing, prompting her to point out how intimate he's being with someone he's just met. It occurs to Youto that Emi likely lived a completely normal life in this timeline. He attempts to explain their connection, recounting how close they were in a previous world and describing the Emi he once knew. Emi initially reacts with disgust, but quickly warms up to him, opting to call him the same name that she supposedly used in the previous world, "Youto Onii-chan." Although she doesn't quite understand his words, she says she wants to get along with him agaim, and doesn't want him to be sad. Thus, the bond between them is rekindled.
In this timeline, Emi also becomes acquainted with the Cat God. With the Tsutsukakushi family's troubles resolved and the world now at peace, the Cat God has become largely forgotten, as her powers are no longer needed. Realizing the Cat God's loneliness, Emi often willingly allows the Cat God to possess her. Meanwhile, the Cat God too feels compelled to support Emi.
Some time later, Youto and Tsukiko begin attending the same university where Emi's father works as a professor. After their seminars, Emi, now a middle school student, frequently visits the two of them at their rented apartment, where she takes charge of meal preparation and cleanup efforts.
==Navigation==