Thatshallnotbeknown

why?

mc is too childlike, ml "randomly" touching him feels very weird and awkward and an age gap on top of that

Bit of context on their personalities if you want, cuz the manhwa adaptation is missing much of Yohan's thoughts I feel.
On a general basis, know that all high-level awakeners are genuinely good people.
Yohan does like Hyunmook, he doesn't care for the age gap but Hyunmook is very conscious of it instead, and it's why it'll take some time for them to actually date.
More below, with some spoilers







Yohan is a certified crybaby, a bit spoiled due to his family being rich. He has been coddled by his circumstances, but he's also treated like "not much" by his parents for it, and constantly compared to his older brother. Even when they manage to leave the Abyss and Hyunmook tells him to hide the fact he's a purifier due to safety concerns, telling him to instead say he's a low-level awakener, his parents were happy to tears that he was safe but not at all impressed about him being awakened, since their meter of comparison is the older son.
As for his feelings towards Hyunmook, they started out of admiration and relying. His feelings might seem a bit superficial since he is young and "simple", especially compared to Hyunmook's for him, but he genuinely loves Hyunmook.

As for Hyunmook, the novel states clearly that he has no recollection or control over his actions while he's a madman, describing it as waking up from a nightmare he barely remembers. His crazed state does get really touchy, but mostly in a harmless and cuddly way past the initial chapters in the ruined city. As Yohan's power gets stronger Hyunmook also spends less and less time in that state, and even when he is in that state after using his powers too much, Yohan ends up not minding it much but he purifies him every time he doubts he's sane, just to be safe.
There's one instance in which an interaction (veeeery intimate, I'll let you guess) can be dubcon farther in the novel, after they tried destroying the Abyss's core but failed and the team ended up corrupted, cuz Yohan is barely understanding what's happening and is scared, but he clearly ends up enjoying it despite not remembering much afterward.

Even so, I still find Hyunmook one of the greenest flags I've read. His feelings for Yohan run deep, and genuinely cherishes him as a miracle and his savior. He is very conscious of their age gap, since it's muuuuuch more than 10y due to time flowing differently in the Abyss, and it's the reason why he's conflicted about starting a relationship with Yohan, but he ends up accepting when they talk about what's their relationship.

Gotta say, Yohan is the one that takes the initiative for physical contact most of the time (with the exceptions being when Hyunmook is in a crazed state), while Hyunmook takes the lead after it starts. Most of their interactions, outside Hyunmook holding his waist close to keep him safe, are hugs, pecks and kisses. The novel doesn't focus on the nsfw part much, there's like 4/5 instances (the dubcon included) in 180+ chapters where they are more intimate.

Thank you for this! I just hope there's a 'like' button for replies as well jhffhnffdhkb

Np! I'm currently rereading the novel myself, so if there's more you wanna know feel free to ask!

If i could id like it too ^^

Sure thing, what did you wanna know? Or was the novel link that you wanted

oh i wanted to say that i wish there was a ""like" button too mb hah

Ooh I see, thanks!