[He definitely does not want Koizumi dead anymore. It's true. Though that shouldn't be that hard to believe, considering he wasn't entirely sure he wanted her dead even BEFORE he attempted to kill her. So...]

Well you asked them to forgive me, didn't you? And they did. Even though I...didn't deserve that.

[Well that's part of the reason behind his abrupt change in behavior, anyway. But he doesn't see much point in going into all of it right now. It's not really relevant to the matter at hand.]

I nearly died in your execution. Even with you protecting me...there was nothing really to stop me from bleeding out. And yet...in spite of the fact that I would have deserved that, they refused to let that happen. They argued with Monokuma for my sake, and convinced him to patch me up. And when they found me in the hospital after that...they were actually happy to see me.

[Okay well there was ONE notable and predictable exception to that.]

After all that...I couldn't go back to carryin' on the same way I had been before. Not that I wanted to, anyway. So...that's why... I don't want to see any of 'em die here. And I plan to do whatever I can to prevent that. Especially...Koizumi. I at least owe her that much, after what I did...