Tokyo: I took in my ex's twin sister (1-151).

Summary

Ayano Yui playfully convinces her older cousin, Sawayama Haruno, to take pictures of her, using their childhood bond as leverage. Despite their close relationship, Haruno feels overwhelmed by her childlike behavior and expresses concern about her early arrival in Tokyo. Yui shares her artistic ambitions and the opportunity to study abroad, which impresses Haruno. After breakfast, Yui makes herself at home, indulging in candy and teasing Haruno about a girl living with him. Haruno, preoccupied with his work, tries to ignore her antics. Meanwhile, Yui's curiosity leads her to explore Haruno's laundry, where she discovers his clothing and becomes overwhelmed by nostalgia and affection, leading her to engage in an intimate moment with his shirt. She reflects on their childhood and the unique bond they share, feeling a mix of emotions about their relationship.

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