Sorry I accidentally dislike but I agree with your thoughts a lot, since there can be so many possibilities ヾ(☆▽☆)
Older comment.. many people think iruma is demon lord become human or the ring is demon lord.
Can't wait for new update(づ￣ ³￣)づ
I would say iruma is demon lord cuz his habit same as demon lord. Music ,art , happiness
iruma has navy dark black hair, but his parents got light-haired colour right?? i think he might be half-demon xd! i'm 100% sure there's a reason why grandpa adopt him. idk if it's a simple reason or secret reason behind it-
Huhu this is why i love stories like these
Uhuh that may be also the case but the ring is also very similar to the demon king especially its name (tho i forgot skksks)
IKR, grandpa may gave the reason taht he really just want to have a grandsom but i doubt that's really the case. The hair color is one of the biggest take away why i think they're not his real parents coz you'll notuce the style in this manga, most of the parent and child in thiz story are look a like
especially his parents are traveller, they might be picked him up somewhere.
I really believe thebtheory about iruma not being a human or let's say not fully 100%human. Maybe he is the reincarnation of the demon kin however there's still the possibility that he is not since the one-eyed person from iruma's ring is tge demon king :0 now what if he went to the human world and met a human that took his interest? Then they had a child which is iruma, now, the parents that was introduced is not his real parents? oR another thing i thought was what if iruma is a part or a shard or the demon king? Not a reincarnation but a part of him?? AKHHHH im so excited