Tanabe Momo/Relationships

### Mio Hirahara

Momo expressed deep affection and loyalty towards Mio, declaring that she was Mio's partner and promising her to protect what is most important to Mio, her sister, Hiori.

In the previous timeline, Momo is saved by Mio, who managed to stabilize her fragment, on her first task as reflector. During the process, Mio was able to sense  Momo's feelings of frustration and sadness. At that moment, they were able to resonate with each other, allowing Momo to know Mio's feelings towards her sister.  Momo accepts the ring that Mio gives her, becoming her supporter, and fighting against the Sephira.

Mio helps Momo to get a part-time job on Platanus. As they fight together, Mio confides Momo her concerns about the girls they were helping, and if what a reflector does is meaningful in a society dominated by adults. In Mio's memories,  it shows they shared happy moments, going out together.

In the current timeline, they meet as enemies. Mio, aware of their past together, acts cold and distant during their duel until she comments on how Momo was still hesitant. However, when Mio accidentally touched Momo's sword, a resonance occurred, showing the memories of their past together. This incident led Momo to finally remember her motivation to fight as a reflector.

Her loyalty toward Mio isn't blind, Momo doesn't hesitate to tell Mio that her actions are causing pain to Hiori. Momo is determined to fight her if she continues on a destructive path.

During the fight at St Ines School, Momo sacrifices herself to protect Hiori from Mio, her fragment breaking and making her fall into a deep sleep. After Momo's fragment is restored, they return to their former relationship despite what happened in the past. Momo declares her intentions to follow Mio in her wish to save Shino and restore the Common to its former state.

### Hiori Hirahara

Momo acts as a senpai for Hiori, encouraging her to be a reflector, also expressing concern when she skips classes.

As the story progresses, they become friends and protect each other. In the battle of St Ines church, Momo protects Hiori, sacrificing her own fragment.

### Miyako Shirakaba

Miyako and Momo become friends while working together, trying to find the ones who are stealing fragments and helping Hiori and Ruka.  When Momo falls into a deep sleep, Miyako is especially saddened, visiting her and even trying to feed Momo with her favorite food. After Momo wakes up from her deep sleep, Miyako insults her, rather affectionately.

### Ruka Hanari

While it may appear that that aren't that close, because of their opposite personalities, Momo is thankful when Ruka takes care of the nukazuke when she was in the hospital.

### Niina Yamada

At first they have a sort of rivalry, mostly on Niina's part, when Niina insists she's Mio's partner, which annoys Momo. They have a duel on St Ines's grounds, Momo wins without using her sword.

Later, after Momo recovers and Nina is now on their side, Momo thanks her for helping Hiori and the others, even playfully teasing Niina when she blushes because of Mio and giving her headpats. In the final episode they are seen hanging out together, which it could be considered as becoming friends.