1. Reincarnated (same world) 2. Transported to another world (forcefully summoned) (fantasy world) 3. Transmigrated (died, possessed another person's body in another world) 4. Reincarnated in another world (died, born again) (starts as a baby) 5. Possession (possessed another body in the same world) 6. Monster Reborn 7. Time Travelled (went back to a point to his/her ĺife, didn't die) 8. Transported in the game world (considered to be another world but not, still different xD) Any novel with MC #5?
#7 Second Chance aka Time Travel into own body in the past. That one girl protagonist novel....forgot which. Gimme a sec... Edit: Found it.
Novel with MC #5 "quickly wear the face of the devil" Warning BL Edit: Oops, it's not a MC #5 since it's not in the same world, but still it's a great read, try it (I don't like BL, but this one is a masterpiece (by NU standard))!
Found it. #5 : Soshite Shoujo wa Akujo no Karada o Te ni Ireru Another but BL:: #5 : The Founder of Diabolism