Episode 4

is the fourth episode of the The Hentai Prince and the Stony Cat anime series. It first aired in Japan on May 4th, 2013.
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==Plot==
At night, Youto recalls what Tsukiko said at school about her complicated relationship with her older sister, Steel King Tsukushi: After losing their parents, Tsukiko clung to Tsukushi, which she believes led to resentment as Tsukushi felt burdened by the responsibility. Tsukiko wishes she could mend their relationship, reflecting on how much she admired her sister despite their current distance. Tsukiko on the other hand, receives a phone call from Azusa, thanking her for her visit and for the stuffed turtle.
At school, Azusa is handed a large stack of homework by her teacher, a consequence of her poor performance on the finals. As Youto passes by, he offers her some words of encouragement. Azusa grows expectant, hoping for some sort of reward for completing her work, but he casually says that he'll pray for her, much to her disappointment.
Youto visits the track-and-field practice to speak with Tsukushi and informs her of his decision not to become the next club president. Still holding a grudge, Tsukushi once again confronts Youto about the "date," forcing him to make up a hasty excuse that he has an evil younger twin, which the dense Tsukushi believes. Youto then confronts Tsukushi about the strained relationship with her sister, but she brushes him off, insisting that it is a private family matter. When Youto claims that Tsukiko has lost her expressions due to the Stony Cat, she attributes her change to natural maturity and denies the existence of any supernatural powers, revealing that she was the one who created it. Later, while on the way home, Tsukiko explains that her older sister created the statue to mend a fight with her when they were young, a memory she holds dear to this day.
The next day, Tsukiko invites Youto to a mall. In the clothing section, Youto imagines Tsukiko in all kinds of costumes. She explains that she's there to buy outfits for her children's welfare club activities. Half-jokingly, Youto suggests she try on a swimsuit, but Tsukiko takes the suggestion seriously. Realizing that Tsukiko can't show her emotions, Youto immediately regrets his comment. Concerned, he approaches the changing room to tell Tsukiko she doesn't need to force herself, but he trips and accidentally pulls the curtain down with him, revealing Tsukiko mid-change.
They have lunch together. Youto apologizes, but Tsukiko, in between devouring an inhuman amount of food, insists she isn't mad. Instead, she blames herself for letting her guard down in front of what she calls a hopeless pervert. She hasn't given up on trying on costumes though, as she hopes to use them to make up for her lack of expressions. Since she doesn't know much about cosplay, she asks for Youto's advice. Youto on the other hand, can't help but feel a strange emotion stirring within him.
In the evening, when they return to the Tsutsukakushi household, Tsukushi mistakes Youto for his "evil younger brother" and accuses him of corrupting Tsukiko. Youto too confronts her, pressing her about her relationship with Tsukiko accusing her of ignorance about Tsukiko's struggles. Tsukushi admits she wishes to sever their sisterly bond in order to "marry in peace when she grows up." When Youto challenges Tsukushi further, she knocks her out with a powerful punch.
Tsukushi storms off in a fit of rage while Tsukiko tends to Youto. When he wakes up, Tsukiko insists that Youto doesn't need to involve himself in their family affairs. She explains that if she regains her expressions, her sister will only hate her more, and that it's better this way. However, Youto finds it unfair that Tsukiko is suppressing herself for a sister that doesn't care for her.
However, Tsukiko asserts that this is his own problem. She reminds Youto of their relationship — partners in crime to recover what they lost to the Stony Cat. She states that if she were to get her emotions back, she'll no longer have a reason to meet Youto, her sister will continue to hate her, and she will be all alone. She admits that she'll do anything it takes to stay with Youto, but is afraid that the feelings aren't mutual, given Azuki Azusa, who she believes is a good pairing for Youto even if they claim to only be friends for now. She expresses her fear that once she regains her expressions, she'll have no connection to Youto anymore, and asks Youto what he'll be to her once this matter is over. However, Youto struggles to respond.
The next day, Azusa scolds Youto for not saying anything after Youto tells her what happened. When asked why she's upset, Azusa answers that it's because they're friends, but quickly corrects herself to say "rivals," though refuses to elaborate further. Demanded by Azusa, Youto finally speaks his honesty feelings: Tsukiko matters to him more than anything else, and he is determined to help her in any way he can. Satisfied, Azusa agrees to help him deliver a letter, challenging Tsukushi to meet him at the hill with the Stony Cat for a showdown over Tsukiko's future. There, Youto wishes to the Stony Cat for the removal of his shame, embarrassment, and restraint to confront Tsukushi without hesitation. The Stony Cat grants his wish by symbolically taking his underwear as an offering.
Youto, now unrestrained, challenges Tsukushi to a duel. He vows to take on the role of Tsukiko's older sibling and fight to restore her emotions, claiming Tsukushi is unfit for the position because of her cold and oppressive behavior. Tsukushi dismisses Youto's declarations, questioning his logic and daring him to prove his resolve. She boasts about her close relationship with Tsukiko, sharing personal memories from her childhood. As the argument intensifies, Tsukushi admits she loves Tsukiko more than anyone else, shocking Youto.
Tsukiko emerges, having overheard the entire confrontation. She chastises both Youto and Tsukushi for their actions and demands an explanation. When pressed by Tsukiko, Tsukushi hesitantly admits that she tried to sever ties with Tsukiko and planned to study in Massachusetts to bring their relationship to the next stage — marry Tsukiko in a place where same-sex marriage is legal, and live together with her forever.
Changing her mind about the Stony Cat's powers, Tsukushi threatens it into returning Tsukiko's emotions in the form of the meat bun that she lost the night she made the wish. Tsukiko, realizing what the meatbun signifies, instead offers it to the Steel King despite Youto's attempts to stop her — Tsukiko, believing that her older sister is in fact a really kind person who struggles with expressing herself, has decided to give up her expressions for good and offer them to her sister instead.
On the last day of summer vacation, Youto and Tsukiko walk home together. Youto has begun calling her "Tsukiko-chan," slipping into the role of an older brother, which Tsukiko does not seem to appreciate. Instead of walking all the way home like they did before, Tsukiko splits up with him early. As she walks away, Youto can't help but notice that Tsukiko has been keeping her distance from him lately.
When Youto arrives home, he is shocked to discover that his house has entirely vanished.
==Characters==
==Navigation==