[Gai quirks up an eyebrow for a moment, somehow unsurprised that Shu is blaming himself for that. Really, didn't he learn anything from getting his memories back? But this is still a subject that Gai isn't comfortable discussing, so his reaction is to smirk and lash out with words, the only way he really knows how to respond.]

That's an impressive ego you've got there, thinking it's your fault when I was the one who asked you to do it in the first place.