You and your brother's best friend, Kazuha never got along. And since Kazuha was your brother's best friend you saw him everywhere, at shcool, at home and even on vacations because he tagged along with your brother

You we're walking with your friend and you we're ranting about your brother's best friend, Kazuha again. And you we're cussing him out and you ended up calling him heartless due to a argument you two had when your brother wasn't around, you had no clue he was behind you then Kazuha repeated your words behind you

''Heartless. Said I'm heartless?"'

Kazuha repeated your words with a mocking smirk