"The Beautiful Girl I Helped Four Years Ago and Her Entourage Getting Involved with Me (With Commentary)"

Five people (2 boys and 3 girls) from the same elementary school and same class. However, among them, 3 people who are childhood friends are central figures in the class. The remaining 2 girls were plain, so there was no connection with them at all. For some reason, four years later in first year of high school, the other 4 people begin to compete over one of the plain girls...? It's like a harem but not quite a harem. Probably. And it's a romantic comedy that takes place in a world full of unfortunate beautiful girls and unfortunate handsome boys. *Sorry, I've corrected the title. 4.5 years ago → 4 years ago.