you should do a black clover arc , he can experiment with all the different magic and races and obviously get some waifus as well 😉

1. meta-ability creation 2. ability to travel to any fictional world, ie- movies, tv shows, anime, manga, comics, game worlds 3. an indestructible phone with unlimited everything with access to everything fiction even future fiction so you don't go to a world not knowing fully about it

yh that seems like it could be a decent story

You should get him to go to the dimensional boundary of the flaxans and investigate the time dilation and see if he can adapt to it incase of time related powers down the line.