Houkago wa Kenka Saikyou no Gal ni Tsurekomareru Seikatsu Kanojotachi ni Sukarete

Shiki is a top student at a school known for its delinquents. He is attracted to Karin, a popular and physically dominant girl. After he helps her confront a group of troublemakers, she develops feelings for him. As Shiki helps Fumiki improve academically, Fumiki teaches him combat skills, though both become awkward during close contact. Karin's friends also show interest in Shiki, often teasing him and offering advice. Through their interactions, Fumiki becomes stronger and earns new recognition at school.