akikan40
Congratulations on the work Akikan, however I would like to know if there will be a mutation in the zombies to increase the difficulty, since Isao will be very Op in the future. Furthermore, if he goes to other worlds, I would like him to go to a French world, and without magic because it wouldn't make sense to have magic in the world of Zombie Apocalypse, if he were to go to other worlds, let it be to go to movies or games like Far Cry, War Mundial Z, Outlast, Left 4 Dead or Resident Evil and among others. Don't take him to magical worlds, it will ruin the immersion.
Did you perhaps forget this fanfic has multiverse travelling as a theme in it? Akikan eveb considering to let the mc travel to either JJK that have cursed energy which is essentially mana that comes from negative energy, and a fuel to use "magic" or rather cursed techniques, and there is also Danmachi that revolves around falna that let you level up and learn skill, physical and supernatural, like "magic" and last but note least, there is One Piece that have Devil Fruit, that let you to use limited "magic" based on what "story"(?) the fruit have. Given the multiverse theme of this fanfiction, magic or other supernatural power that isnt physical becomes essential (there could be a skill that restrict physical thing and only magic allowed, and vice versa, this is why more source of power cant be bad, well perhaps other than overburden his body, but he is the mc, the probability of that happening is small) for traversing various worlds, aiding survival. Furthermore, have you read Akikan's dimensional chat group fanfiction? (While I'm unsure of Akikan's plans, there's a possibility of zombies undergoing mutations for upscaling purposes so it wasn't too easy for the mc. It's conceivable that zombies could eventually learn physical skill and perhaps even magic if the author wants it, or perhaps none at all If mutations don't occur) it could resemble that story. Even though the mc main world lacks supernatural elements, he still possesses magic and other powers to ease his quest completion and protect his loved one throughout the multiverse.