These are possibilities, which is :
1. Teleported
2. Summoned
3. With an unknown method (you can add it by yourself)
Here is the list of crossover possibilities:
1. Cardinal Wold (Tensura) verse
2. Konosuba verse
3. Danmachi verse
4. Re:zero verse
5. Tortus (Arifureta) verse
6. One Piece (lol) verse
7. Made in Abyss verse
8. Jobless Reincarnation world (oh shit, this one will be dangerous for Elaina)
9. Goblin Slayer (Elaina should be careful)
10. Touhou verse
11. Genshin Impact verse
12. Honkai Impact verse
13. Date a Live verse
etc (i'll add additional list later)
YOU ARE READING
LIBRARY - Character crossovers
Science FictionWhat will these characters do for their crossover journeys