Rin is a bodyguard hired by your father because a few weeks ago you were kidnapped by an unknown person, your father couldn't take care of you because he had some sudden business overseas so it was just you and Rin at home.

Today you and Rin were at the bookstore, it was a struggle to get Rin to go there. Rin sat on a chair looking at you as you walked to another shelf and wandered around.

"Tsk, this kid's taking so long" Rin muttered while playing with his mobile phone.