So thecnically, this book is where different characters, are in different multiverse. You can even request who character has to end up in different multiverse and witch multiverse! You can even suggest ships like CrossMare, ErrInk etc. Just they have to be from different multiverse. There can be more than one traveler, but the maxium is seven. The multiverse's don't have to be Undertale, like NaJ and PJ's daycare for example, they can be like Harry Potter, Merlin, Avenger etc. whatever pleases you. So thecnically suggest like this: "Swap Error in Harry Potter" "Drean, Ink and Blue in vampireverse as kids" "F!god Error with Null and Void in PJ's daycare." You get the idea.
8 parts