Shingeki no Bahamut

[Kraco]

Favaro has always known what happened back then. It seems to me he has let Kaisar live in the dark because that might have been the only thing left for Kaisar to live for. Misplaced hatred. Kaisar's father might have been the greatest fool in the whole story, which we don't yet fully know, so thinking his father was a great man who was betrayed might be easier for him. Though it won't let him live a wholesome life at all, nor get over anything, so it's not like Favaro's decision would be all that merciful. On the other hand sending Kaisar after some lord of demons wouldn't have granted him a very long life, either.

All in all it's obvious Favaro still considers Kaisar his friend.

[Buffalobiian]

Favaro has always known what happened back then. It seems to me he has let Kaisar live in the dark because that might have been the only thing left for Kaisar to live for. Misplaced hatred. Kaisar's father might have been the greatest fool in the whole story, which we don't yet fully know, so thinking his father was a great man who was betrayed might be easier for him. Though it won't let him live a wholesome life at all, nor get over anything, so it's not like Favaro's decision would be all that merciful. On the other hand sending Kaisar after some lord of demons wouldn't have granted him a very long life, either.

All in all it's obvious Favaro still considers Kaisar his friend.

He didn't know much back then. He just attacked the cargo (with or without knowledge that it was under Kaisar's care), and assumed the jewels summoned a demon and killed his dad. He only just learned that the demon was in fact Azazel, and was entirely a set-up by his dad's friend.

Once Kaisar knew that Favaro was a thief, he'd just assume Favaro was the cause of every misfortune that happened to him - just like what happened here.