上郷 芹

Weakness: Her butt and being shamed. Gets turned on when her butt is played with or when she is forced to do embarrassing things.

Kurumi's cousin and the class president of Tsukushi's class.
She is very diligent and trusted by the teachers and thus is left to do many miscellaneous task causing her to stay late after school. However, she is suspicious of Tsukushi and will stop him from causing any kind of trouble. Coupled with her serious and stubborn personality, she won't anyone get so easily away if they do something bad. 

However, recently, she has taken to wandering around naked after school when no one is around.

"I-It's a promise! T-That today... we'll eat lunch together!"