Butterfly Day by Day

Shibazeki Suiren is a stunningly beautiful girl. Her classmates are astonished by her beauty, but after noticing her quiet manners and lack of contact except with her friends, she receives the nickname "Takane no Hana", a beautiful flower but impossible to reach. However, after a fellow freshman called Kawasumi Kouha saves her from a persistent suitor, she finds herself mesmerized by him… as he's the only boy who won't look at her no matter what.

Chapter 75.4 is part of the Hibi Chouchou x Hirunaka no Ryuusei crossovers and is included in that entry.