A few unnamed characters in the anime interacts with the StuCS and their friends.
The blonde-haired bully is double-hit by the boys, but later revives and uses weapons.
The red-haired bully leads the attack against Yui, comes back from a chop but a combo of a knee and high kick take him out
The brown-haired bully is taken out instantly by a palm strike to the face.
In episode 16 this girl mentions to her friend having seen Fujishima walking her bulldog
She claims that bulldogs don't seem cute, but Fujishima sets her straight by showing her pictures
Kaoru's taller friend says Iori is a fake airhead
Kaoru's shorter friend supports the rumor of Iori manipulating guys