Groupchat fanfiction. Oc gets special phone that connects to Mooncell(oc is from our earth, not from Nasuverse) and has a groupchat shared with the three Hakuno's(Mind, Body, and Soul), along with a few of the servants. Oc's phone allows him to travel to the mooncell, or too 4 other worlds, also a special Shop.

The 4 others worlds, Fiore(fairy tail), the pokemon world, the digital world, Highschool DxD.

The shop included, basic breathing formless(ability to learn the basics of Demon slayer forms to make original form), sacred gear(no longinos), lacrima, pokeballs, pokemon eggs(three tiers), digimon cards(tamers digivice, digimon species card will create digimon in digivice)