Even the raws haven't reached that part where we're wondering whether that white head is faking it or not yet. But they seem to be on better terms as of now. The past was partially revealed. It was a misunderstanding for sure. The whole past hasn't been revealed, but it seems like the white head kinda raised the black head(he was a child) and even helped him to get married to a woman. Even at the wedding, they were all happy, but Blackhead's wife died not long after that. She was murdered, and that white-headed dude was at the crime scene. (He probably didn't kill her and the murderer was another person)
And, it seems like the white head has become a mortal in the present time, but I might be wrong because it hasn't been stated explicitly yet. It was like a subtle hint.
can someone who has read the raws pls spoil me did he actually lose his memory or is he just faking it? and did he actually kill that person in the past who was dear to uke on purpose or are they gonna make it a misunderstanding??