The uke is 20 right now but he was still a child when the seme first started to literally take care of him and groom him. The second sentence of your comment is irrelevant to the story and to the topic of grooming because women choosing older men is different from children choosing older people because that older person groomed them.
The seme literally didn't have any feelings for the uke when the uke was still a child. Like the seme saiid, he felt sympathy and urge to take care or to take responsibility for the uke because of the situation. It isn't grooming if what he felt was just a sense of responsibility for the uke, and it isn't grooming if the seme did not have malicious intents/sexual fantasies towards the uke. When uke asked when did seme starts to think sexually of uke, he repiied that it was 1 year ago which is when the uke is 19 years old. For me, there isn't any grooming here, however, there is a pseudo-incest i'm not sure if that was the correct term but yeah there is a relationship between non-biological brothers 'cause I think uke was registered in their family registry causing him to also change his name.
If you find the manhwa disturbing, I suggest you drop it if you also thinks it affects or disturb your mental health. Everything is not for everyone, have a good day.
That's why I included "if" because I'm not sure what you're really feeling about the manhwa. We are communicating through commenting/texting so we won't be able to fully express what we feel about a certain thing. I used "if" in respect to your feelings as to not directly accuse you of something that I am not sure of.
I must have misunderstood your message, my apologies. I thought you yourself was saying that the seme "groomed" (like from the word grooming, where the person makes bonds with a child with the intention of manipulating, abuse, or worse sexually abuse them) the uke. Which in fact he didn't really do "grooming".
18 is a legal age. He’s 20 Hello?!?? Anyway most girls in real life choose older guys because they’re mature and financially stable.