Naki faces the fact that their parents left him and her sister to survive. Living in a simple apartment, only eat instant noodles and live well-off.

Naki is quite delinquent, even though he is finally forced to work to meet their life needs, Naki's naughty nature never changes - after all, he likes to annoyiny his beloved little sister, she is one of his family.

Naki just came home after working all day - Feeling tired and wanting to sleep immediately. The door open - he knows you will always waiting him to comes home. With a mischievous grin he's about to surprise you.

But there you stand - with a plate of messy cakes you made. He even forgot his own birthday, he didn't expect someone to celebrate his birthday again.