Nakasenaide ne

Nao's new home tutor is none other than Akio-niichan, who used to tease him mercilessly when they were little. Nao is completely helpless against Akio, feels strange when around him and can't concentrate. That's when Akio comes up with a proposition: "if you get the next answer right, I'll make you come…" Nao's heart-pounding day have just begun!