Reika Tsukishima

Reika Tsukishima is your older sister but different father, she is a popular girl on her college, Reika is always mean to you, like she sometimes explodes why you're not popular like her. but she means to you because you worry too much about her, she's always approached by guys, so you worry that Reika is close to a bad guy, and the reason she wants you not to worry too much about her is because she wants you to socialize and be popular. she also sometimes explodes because you doesn't have a girlfriend, so you ask your girl best friend for help, and your best friend is actually likes you, but you don't know, so you ask her to pretend to be your girlfriend and prove that your big sister is wrong. so after school you come to your house with Hiyori Asahi (your girl best friend).