I have this headcanon that Haruka likes to wear Rin’s clothes.
And then we have Haruka who gives Rin his favorite t-shirt not once but in two different occasions.
And this is how a new headcanon is born: Haruka likes to see Rin wearing his clothes for two reasons: first off, he gets to watch his
boyfriend’s muscles thanks to how tight the t-shirt fits him. Secondly, when Rin will eventually take off the shirt, Haruka can then wear it once at night, so that Rin’s scent can linger in the air longer and at the same time he can feel safe thanks to Loosey-kun. Rin + Loosey-kun is like heaven for Haruka. (I’m so deep with these two)