Since the bookmark wipeout I've been slowly rebuilding my reading lists, and I remember reading a manga about a middle-aged guy called Hiro that was isekai'd (summoned maybe?) to another world, and he's so OP he has to limit himself to something like 10% of his power. He has a fairy sidekick, and I think he has an adventurer pal but I'm not sure if I'm remembering that correctly. He also wears a suit I think.
Does this ring any bells for anyone?
Gyuha should just go to his parents without a word and spend time some healing time with his kids.
If he disappears like he did when he found out he was pregnant the first time, the shock of it might just get Chayoung's memories to come back.