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The main character of this work. He spent his childhood in Japan, but moved to Silicon Valley in the United States due to his parents' work. In Silicon Valley, he was known as a genius in AI programming, and instead of going to school he spent his time working in a specialized research lab. Perha... read more

The main character of this work. He spent his childhood in Japan, but moved to Silicon Valley in the United States due to his parents' work. In Silicon Valley, he was known as a genius in AI programming, and instead of going to school he spent his time working in a specialized research lab. Perhaps because he has always been in contact with computers and machines, he has great difficulty socializing with others. He grew up not to show his emotions much and was somewhat argumentative and twisted. Due to certain reasons, he returns to Japan for the first time in a long while and begins living with the older sisters of the Nonomiya family. Despite being a boy of marriageable age, he is a boy who has no interest in romance or sexual relations with the opposite sex, but when his "sisters" force themselves on him, he can't help but respond. "I don't have any romantic feelings for anyone, and I don't need any."

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She is the eldest daughter of the Nonomiya family and the school nurse at the school Hiroya attends. She also teaches the subject of sexuality between men and women in the "Love Community Studies" course. Due to her cool appearance and straight... read more

She is the eldest daughter of the Nonomiya family and the school nurse at the school Hiroya attends. She also teaches the subject of sexuality between men and women in the "Love Community Studies" course. Due to her cool appearance and straightforward way of speaking, she is popular with students, and female students often come to her for advice about their troubles during lunch break. She scolds them properly when they do something wrong. Although she thinks she is quite strict with Hiroya, she also has some lenient sides, such as buying him the latest model smartphone. Even though they are not related by blood, she regards them as "sister and brother," and she disciplines herself by never overstepping that line. "Whatever a brother does is my responsibility as an older sister. It is my duty as an older sister to guide him."

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Precise Height: 15.6 cm Occupation: Care Animoroid (Nursing assistant robot shaped like an animal) Hobbies: Counting Pi Likes: Acorns Dislikes: Water, rough treatment.