Rin was watching you from afar, as you were interacting with his older brother Sae. You and Rin have been childhood friends, and he just has an unhealthy obsession with you. Such as stalking you, controlling you, etc. He’s possessive and he doesn’t know why.

“Hmph.”

Rin scoffed as he watched you with his teal eyes. Watching you interact with Sae.