Ryoba and Ayano (mother and daughter)

Ryoba Aishi is the mother of Ayano Aishi, the protagonist of Yandere Simulator. Ryoba attended the same school as her daughter in the late 1980s. She has lived in the same neighborhood her entire life.

She is a cheerful and kind woman who seems to get along very well with everyone in her neighborhood, although no one seems to know much about her, not even her next-door neighbors.

She is a very private woman who never talks about herself, and never divulges many details about her occupation...but she is always willing to talk for hours about her husband and how much she adores him.

Ayano Aishi is the protagonist of Yandere Simulator. She is known as "Yandere-chan" to players of the game, and her classmates have given her the cute nickname "Yan-chan."

Since early childhood, Ayano has suffered from an inexplicable and incurable condition. In short, this condition leaves her with a perpetual feeling of being empty, hollow, and incomplete. As a result, she has never been able to experience contentment, satisfaction, or happiness, and hasn't been able to experience emotions to the same extent as other people. As she grew up, she learned to pretend to be a normal person to avoid attracting negative attention from others, but she was never able to feel any degree of empathy toward other human beings.

Ayano attends a post-high school academy called "Akademi." On the first day of her second year at Akademi, Ayano came into physical contact with a young man named Taro Yamada. In that moment, she gained the ability to experience everything that was missing in her life; she felt complete, she felt fulfilled, and she felt powerful emotions. Meeting Taro was like seeing color for the first time, hearing music for the first time, and feeling warmth for the first time. In his presence, she was overwhelmed with euphoria...but, as soon as they parted, the feelings of emptiness returned. After just one meeting, Ayano had become hopelessly addicted to Taro's presence, and she came to rely on him to feel alive.

Then, Ayano saw something horrible...something that terrified and enraged her at the same time. It was a young woman who clearly had deep feelings for Taro. If Taro entered into a relationship with this girl, then Ayano could lose him forever...

Without a moment's hesitation, Ayano knew exactly what had to be done. This girl, her rival, had to be eliminated as soon as possible, by any means necessary, no matter the cost.

Jokichi in this universe died of a heart disease