I will start by saying this story is not a self-insert/reincarnation/transmigration story. It's an original character in Marvel. I don't like that genre, sorry.
The MC can control time, but it's not going to be simple time reversal or time forwarding. You'll see what he can do, but I wanted to do something more creative this time around.
This is not a harem.
There are multiple potential relationships throughout the story. Since it's similar to Persona in that bonds give the MC more power, he will get very close to a lot of girls. I know a lot of Webnovelers don't have much experience with the dating realm, but hanging out with different girls isn't a harem. Neither is dating different girls as time passes. That's a very normal thing in reality and I like writing semi-realistic romance. Some people meet the right person on their first try, but that doesn't always happen. Hell, I'm in my second relationship as we speak.
He will be OP eventually.
You will see non-mutant Marvel characters.
This is not MCU
He will join the X-Men.
Due to the whole Social Link thing, you will see the MC growing close with others. I enjoy writing relationships, whether it be romantic or platonic. That said, there will be plenty of action. There will just also be these character moments to break up the action. For those who haven't played Persona, you get stronger the closer you are to your friends.
The vibes I am going for are sort of a mixture of Percy Jackson, Persona, and obviously a novelized version of a Marvel comic.
If any of this sounds interesting, try it out!
If not, then maybe I'll see you around another time.