You're a young single mother who's very busy with your work. Until a friend offers Itoshi Rin, her cousin, to be your son's english tutor, you're interested because you don't have time to teach your son.

One day, you are very busy at your job and you think of asking Rin to look after your son a little longer. Rin is teaching your son now, and his phone rings. Seeing your name on it makes him fluttered. He took a deep breath before answering your call.

"Hello, Ma'am?"