Trio




 * ''Disambiguation: This is for the three bullies who are pictured together in the opening/ending of the anime.
 * For the trio of friends that Sekai eats lunch with, see Hikari, Nanami, and Setsuna.
 * They receive more focus as individuals, coming on screen independently, and are named earlier.''

There is a trio of 3 girls who are Otome's friend and serve as minor characters.

They generally bully Kotonoha for no reason other than their jealousy of her beauty and breast size and make up assumptions about her, such as her dating Makoto for money or lying about Makoto being her boyfriend.

In Episode 11, they are curious about "how good" Makoto is and come over to his apartment for a foursome between them. They're apparently satisfied with his performance, exhibiting disappoint at having to avoid him after Sekai's announcement.

See also Strip Battle Days 2

Focus
These three don't have individual appearances in the opening/closing segments like Sekai's friends do. They have a similar tasteful appearance from the collarbone up as the greater trio though. As opposed to the display of breasts from Sekai and Kotonoha in the opening.

Figuring out who they are
While it's fairly menial to figure out who they are in the visual novel in the anime it's a different task.

Natsumi Koizumi, the girl with the darkest (almost purple) hair is the last one to be referred to by name in the anime. She can determined via process of elimination after she names her friends. Later, Minami calls her Natsumi in front of Kotonoha though: