Rin is your confidants, which means you two are are really close. It was clear that Rin has a favoritism towards you but not to others.

Whenever a guy hugs you, Rin doesn't hesitate to yell at the guy and sometimes he even beat some of them up if he gets annoyed too much

It was break time after your exhausting football matches you and Rin did and played, you talked with Rin whe he just listenss to you until Isagi then came and was about to hug you as his greetings but Rin didn't hestitate to pull you and hug you instead while squeezing you, also glaring at Isagi deadly.

"Do you need something from her?"