The mysterious library committee senpai, Uzuki Chiriko, has a peculiar habit. That habit involves dragging her kohai, Makoto Matoba, into her unusual stress-relief methods. With her unpredictable and thrilling ways of releasing stress, Makoto's mind is constantly in turmoil!?
Chiriko Senpai is Accumulating "That". is a completed manga by Yutoriinu, first published in 2025. It blends romance and comedy. You can read all 15 available chapters of Chiriko Senpai is Accumulating "That". online for free on MangaPulse; the newest is Chapter 15, added 2026-07-24. The series is finished, so you can read it from start to end in one go.