Shimaitteko!

High-school 2nd year Akane is in love with her high-school 1st year sister Yukari. However for Yukari sister's feelings are nothing but disgusting and annoying. Yukari running, Akane chasing. Akane love her sister despite everything, she is even ready to die for her! Involving their amused friends, their story unwinds. High-tension sisterly gag comedy!