Responses
There's 2 main reason
1. He got isekai-ed when his body age was around 13 or 14 (possibly younger). And due to being in poor quality life in growth age, he didn't grown as much as he would have.(ex: like Levi from aot)
2. One of his early owner was disgusting pervert who likes to be pampered by young boys, and if he were to be himself(40 years old man), he would get punished. So in order to survive his behavior became like child.[it's not spoiler, it was in noble ch1]
It was genuinely a good read with the world building, characters and artwork!! Did not regret it lol the ratings were fr with it
The only factor that I can't get pass is that the mc looks way too young,, like I mean...very young and pedophilic feeling about the whole dynamic between the three of them? If I wasn't mistaken, he was about 16-17 at the (physical age) in the story right? So yeah that is very off putting for me, just wished that the artist made him look older
Anyhow, was a good read!!