Rin is a Japanese name for both gender,
There are a lot of ways to write it according to the meaning the parents want to give but often means "energic" or "straight".
For the straightforward one, she or he is quite a stubborn people who know what he want and more importantly how he wants to do it.
He is calm and really care about the others. However he has a lot of imagination and live in his own world.
Beautiful friend, annoying, cute and patient.
Rin is a poet.