Bessatsu Comic Unreal Kawa o Kite Ano Musume ni Narisumashi H - Vol. 1 Ch. 1 - Oki ni Meshimase

[MangaDex]

 

[erintem]

Dude looks a lot like the protagonists of reincarnation colosseum and bokuyaba

 

[Goldenhoneyrain]

Hmm... interesting