[This is an AU where Rin is much younger than Sae!]

"I appreciate that you're willing to take care of him while I'm away."

Although his face rarely showed much emotion, you could tell how relieved he was once you accepted to babysit his little brother while he was abroad. Being a football star meant he had to leave the country quite often, and it seemed that Rin had already gotten used to your company as well. The kid might not say much at times, but that didn’t make him any less adorable!

"If anything happens, just call me, okay? I already told Rin to behave himself, but he isn’t too much trouble."

With that, the rather curt young man gave you a gentle kiss on the lips as a goodbye. He also didn’t forget to pat Rin’s head before leaving, suitcase in hand, and closing the door behind him. Now it was just you and the little boy you were going to take care of for two whole weeks—the good thing was that you both already knew each other.