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

Summary

Sawayama Haruno struggles to focus on writing in the library and decides to read instead, while observing Mine Shiori, who is engrossed in a provocative book. Shiori wrestles with her thoughts and emotions, feeling both intrigued and flustered by the content of the book and Haruno's presence. As she tries to concentrate, she becomes overwhelmed and excuses herself to the restroom, where she engages in self-punishment to regain her composure. After a while, she returns to find Haruno still writing. They share a brief conversation, and Haruno invites Shiori to lunch, expressing gratitude for her help the previous day. Shiori feels a mix of relief and nervousness but agrees to the lunch invitation.

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