[Seeing Iwaizumi or Blue getting severely injured would be amusing, but let's face it he would rather dole out the punishment personally. Somehow she managed to see through his answer.]

I heard all that noise, and I wasn't sure what was causing it, so I came to see for myself.

[That explained his reason for attending but not for why he was remaining]

No, of course not. If you did care about someone, it wouldn't be me. [Not mincing words on the subject. He knew he wasn't well-liked, just not to what extent, he didn't sound all that broken up about it either]