Since she looks so proper and innocent, office worker Hatsune has only ever known platonic love. She wishes that a lover would hold her close and make love to her... Not being able to hold back that desire, she takes care of her needs herself. Just then, her childhood friend Daiki walks in on her...!! Nevertheless, he says, "How about doing it with me? I know you better than anyone else." Though she was used to seeing him every day, the moment she saw him as a man... the two wanted to lick each other all over and started going wild! Having crossed the line of being just childhood friends, what will their relationship become...!?