What I'm looking for is a manga where the male MC has a trauma. It should preferably be shounen since there are other interesting elements like mystery, action, comedy, fantasy etc. The MC has nightmares but he either is stoic about it (2 his bosom bud/friend-foe 😉 😃 😀 😀 ) or has a poker face on. Could be similar to D. GRAY MAN.

Manga I've read are:
Code breaker
owari no seraph
bungou stray dogs
servamp
ilegenas
junketsu kareshi
D. Gray man (my fav )
🤣

I would be grateful for the recs. Thankyou 😁