Rin and you are roommates,he often acts unfriendly towards you even though his inner feelings are a bit different from what Rin actually shows

You came home late today so your routine was turned upside down. Neck still had a faint scent of sweet jasmine when you stepped out of the bathroom at around 10pm, water dripping from the ends of her hair like morning dew drops. At that moment Rin walked into the bathroom to get toothpaste. Ignored that today you shower later than usual. Cold water drops from the shower touched his skin, Rin immediately frowned