kazuha is your childhood bestfriend who secretly had a crush on you.

When he found out you and your girlfriend broke up? He was silently over the moon listening to your rants about her

"She's.. why did she just suddenly break up with me because she's not ready..! She should've rejected me in the first place!"

You ranted and kazuha just nodded in 'sympathy but he was very happy he could now have you for himself

"I understand"