
I get your logic behind it but a male man way older than her is still gross as he is still an adult, it doesn't matter that his age in that universe is around Tess' age as he has the working mind of an adult and is weirded out about dating a minor, that's why the author put the scene about having Art and Tess wait until she is an adult so he wouldn't have so much guilt and worry about dating a MINOR when he is technically an ADULT, although it's funny and cute to see Tess crush on Art there is still concerning points that I just pointed out in my POV, this probably won't change your view as it is my opinion.

To be fair, it would be even weirder if he got with someone the same age as his mental age because that would mean they were quite literally a pedo going after a child since they don't know about his reincarnation. In these situations, the character only has two options when it comes to seeing someone. A pedo who is mentally the same age as them, or a child who is physically the same age as them. I'd definitely prefer if they go with the second option (not that I'm saying either of these are good options, they both make me a bit uncomfortable) cause atleast with the second one I can just think of the MC as a mature and knowledgeable child since they are now living the life of a child anyway.

I see where people are coming from,, but if people take it literally then Arthur’s body is the same age as everyone else’s which is like 13-14 as of right now while his mental age is around 42 as well as his real life experience. The same can be said for children who are the same age who had to mature due to their experiences or the people they grew up around, my friend who is 14 has the mental age of a person in their late 30s but if she were to date someone their age it wouldn’t be weird

So like, people are discussing the hypotethical morality of romance after reincarnation so it is as much wrong and right as the part that relates to reality- but he literally just made her hopefull and its her first relationship she looks forward too. Artur is a character so he is what the autors make him be: and he seems like a "oblivious pedo"
Actually, there are so many reincarnation manhwas I read and most of them get reincarnated at the age of 18~30 but they start from being a baby and date with someone who is at the same age of the body they own at the moment. Then you could say that is pedo too. Yes, it is true that art's previous body was really old but he got reincarnated and is 12 years old right now. He once died in his previous body(though I'm not sure if he died or not) . Which means he can't get his body back. So I really don't like the comments saying "tess and art can't be together this is pedo".