Baby's Manga

I think this is really interesting because it's got the whole "melting the heart of an emotionally unavailable kid" vibe going on. The mc finally found people, and things he cares about, and he's not letting anything hurt them. He's actually a bodyguard at this point in the story- Like, that's pretty accurate. He rarely smiles, and he's aloof af, so when he lets his feelings show, everyone around basically falls for him lol.
Also, he's goddamn strong. Fights like he knows he got plot armour XD