♂ m

The protagonist and the oldest sibling of the Ukima family. He is the newly appointed assistant homeroom teacher of Himari's class. His appearance is very lacking, however, he is very kind person due to having always taken care of his little sisters.

♀ f

"M-My boobs, they have pretty depressing... nipples. Please don't laugh when you see them, okay?"The homeroom teacher of Himari's class and Sousuke's senpai.

♀ f

"U-Umm, so... Onii-chan... You don't want to squeeze my boobs?"The oldest sister of the family, Himari is naturally airheaded but a very honest girl who is also an obvious brocon. She normally behaves like a spoiled girl when she's around her onii-chan, however, but she starts acting like an older s... read more

"U-Umm, so... Onii-chan... You don't want to squeeze my boobs?"The oldest sister of the family, Himari is naturally airheaded but a very honest girl who is also an obvious brocon. She normally behaves like a spoiled girl when she's around her onii-chan, however, but she starts acting like an older sister whenever her younger sisters start fighting.

♀ f

"Is Mio serious? If it'll make Onii happy, then I'll do even more awesome things to you♪"The youngest sister who loves the protagonist very much and is very mischievous.

♀ f

The middle sister who has a very serious and firm personality. She rarely talks to the protagonist at school and acts quite cold towards him, but in reality just wants to be spoiled by him. She often bickers with Mio and is jealous of her for the fact that she is always around the protagonist.