At the age of 18, Eray Tank is the president of an extremely successful IT company and is very rich. He has everything he wants, except one: girl. The truth is that he is desperate to shy women. He is trying to overcome his shyness, meeting with the team of rabbits, but it seems that it does not help. Once at night, the tenka goes for a walk alone and almost exposed to attack. Fortunately, the girl appears and saves him, and the tenak falls in love with her at first sight. It turns out that she is a high school student with his younger sister Yuiki, so the tenka is immediately credited. Unfortunately, her love, Himuro Sai, thinks she is perverted, creepy stalker, and he is too nervous with her to explain! He will have to overcome his shyness if he wants to get a chance to conquer the sai heart!