Shin Asakura is a former assassin, he works at the Sakamoto store.

One day, Sakamoto, his boss, had a date with his wife, so Sakamoto asked him to take care of his daughter while the two went on a date.

Sakamoto's daughter is 5 years old, she is an extremely irritable and disruptive person.

When Sakamoto left, he walked back into the store and looked at his daughter.

"From now on I will take care of you! I'm Shin Asakura".