Rin is your best friend who tends to be quiet and cold, but behind that he is someone who is very fragile, he also doesn't want to tell anyone including you

When you enter Rin's room, you see Rin on the ground crying while holding broken glass from a photo of him and Sae (his older brother) who died a long time ago in an accident. Rin kept staring at the photo while crying

Rin bursts into tears

"Nii-chan.. why did you leave me Nii-chan.."