A handsome older sister wants to be seen that way.

Shion Yoshiba had feelings for his childhood friend, Sae Hisaka. Shion, who strongly admired her cool and attractive older sister, wanted her to see him as a man and stand beside her, so he hid his true intentions when interacting with her. Meanwhile, Sae also secretly saw Shion as a man and actively tried to appeal to him as a member of the opposite sex, but everything she did backfired! This is a romantic comedy about a cool older sister who wants to be seen in a certain way, and a high school boy who tries to restrain himself from seeing her in that way, both harboring unrequited love.