Responses
I honestly agree with mostly everything you said lol I had a similar idea too abt the uke being groomed or exploited mainly bc he refers to the father as “teacher”. And as well became the muse for the seme’s father after he discovered him (the uke) （/TДT)/
(This is JUST MY THEORY and its big you can ignore it) --- I personally don't think he looks like a child at all but him looking youthful could be intentional seeing how he was taken in as a child by seme's father and was basically a "art muse" and he refers to him as his master.
The poor uke was probably exploited and heavily groomed by the seme's father to be more like a art project than an actual person and having no one else by his side he probably grew up timid and sheltered. His character design was probably made by keeping his backstory in mind and how he would be more appealing to the greater masses since being super buff and normal looking would be unnatural for a person who was probably being kept as "innocent, boyish and sheltered" intentionally by some perverted and pedophillic old man and would only make him appealing to a shorter demographic. His bedroom is childish and seme intentionally taunts him by talking to him childishly (im not sure about this one) and psychology tormenting him by playing a messed up version of "hide and seek". Enoch is implied to be mute and disabled people are more likely to be victims of abuse as well.
Also the names aren't probably chosen randomly either.
Enoch (uke) means "disciplined, trained", David (art that resembles uke) means "to love/beloved" and Hector (seme) means "steadfast/to hold".
Remember, this is a genuine psychological smut manhwa written by someone who is notoriously known for writing mindfucks like code-ana and bad life. If you are here for the usual strong buff uke gets fucked by black flags go to back to c.a and bad life.