Yozora is the sole daughter of the Kido crime syndicate's boss. Since she was very young, she's been under the protection of a young member named Tatsumi. The boss has recently died, however, leaving the pair to begin a new life together in an old apartment building. She loves him like a brother, or even like a father. But eventually their relationship gets a bit less familial and more familiar... and the two start to see each other as a man and a woman. But Yozora is unsatisfied that she is always the one being satisfied, and so she orders Tatsumi not to move. This time, she's going to be the one making him feel good! "Don't move." she orders... And he has no choice but to submit to her whims...