Demented psycho through the multiverse

it's a multiverse story, Mc is quite twisted in the head to say the least with no moral compass. upon his death he gets two abilities, one which allows him to travel to different worlds but he needs to stay in each world for at least 10 years, the other ability allows him to absorb the abilities, memories souls and appearance of anyone he kills, however this ability can only be used once in each world new chapter at least every two days with a minimum of 2k words, u may suggest any world u want in the auxiliary chapter, it can be anything a movie, manga, tv series, anime, novel, video game. if I think it would work well for the story than I'll add it currently confirmed worlds are: -One piece -Naruto -One punch man -Attack on Titan -My hero academia -Re: zero -Vinland saga -How to train your dragon -Life is strange [Complete] -The walking dead [Complete] -Black clover -Harry potter -Code geass -Death note -Tensura -Solo leveling -Tokyo ghoul -Hunter X hunter -Dragon ball -Charlotte -Avatar [Serializing] -Full metal alchemist -Arifureta -The girl who ate a death god -Detroite becomes human [Complete] -Detective conan -Overlord -The saga of Tanya the evil -Konosuba. -The death mage who doesn't want a forth time -Hellsing -My vampire system -A certain magical index -Tale of the Dark Knight ~Summoned to Defeat The Hero~ (because I want mc to kill everyone in that world) -Fairy tale -Darling in the franxx -Dororo -Devilman crybaby -Isekai quartet -Jojo's bizarre adventure -Mob psycho 100 -Black butler