Haibara-kun wa Gokigen Naname  

Haibara is in a Bad Temper, 灰原くんはご機嫌ななめ

Mio wanted to be friends with a new student named Haibara-kun who had just joined their class. However, upon meeting him for the first time, she was taken aback by his poor grades and feared that he would repeat a year in school. As a result, she asked Haibara-kun for help tutoring her to improve her own academic performance.