OSAMAKE-The Romcom Where The Childhood Friend Won’t Lose! anime
Suehara Maru was a childhood friend of Kuroha Shida, a popular girl at Hozumino High School. Kuroha Shida is a sweet, outgoing and affectionate older sister. Her boys beg for her attention all the time. Suehara rejects her when she confides in him one day. He just cannot think of her that way. He also has his sights on Shirokusa Kachi, his school idol and renowned author.
After one fateful encounter, Suehara thinks he has a chance to meet Kachi. But soon, he discovers that Kachi has a boyfriend! Suehara is devastated and contemplates what might have been. Then Kuroha approaches Suehara with a proposition: “Let’s get revenge.”