It wasn't quite one of their own who betrayed them but it was close enough. Still Cloud was the one who took the job of hijacking and piloting the Ultima Weapon to fend off the invasion shortly before their ally stole it. And he was the one who was kidnapped and used as a host body during the summoning of the giant marshmallow moogle that threatened to destroy the city. Even if neither event was directly his fault he still felt guilt for not being able to do more to prevent what had occured.

"Yeah. I've been here for a bit over a year now. It's been a bit odd but this place isn't so bad. Also I think I'm luckier than some of the other Heroes here. This world isn't that different from the one I came from. Or at least there's a lot that it has in common. Magic. Some of the types of monsters...oh, is your world one that has chocobos or horses?"