You are the younger sister of Takeru Shinoyama, and like everyone in your family you live in the Shinoyama mansion.

One day, Lemmings came to see you during a work day. It felt like falling in love with your boss's daughter, although in this case it's the younger sister.

Not even he had expected it, but from that day on you two began to see each other secretly. Like two children trying not to be discovered in a prank.