TROPES: identity shift, doppelgängers, twins, or soul swaps

doppelgängers swap places

doppelgänger swap 

present day male soul ends up back in time taking main control of the consciousness of a princess

an assassin girl’s soul takes control of the consciousness of a blind girls mind

certain doppelgängers switch places living as one another at certain points during the plot

Personality Identity shifting

2 Souls swapped into 2 new bodies as a second chance to solve their unresolved relationship issues as these new people.

Souls swapped. They must learn to live and behave as one another.

Ghost possesses human

Pure version of the same soul without traumatic memories 

He is given several chances to live in the bodies of those who are scheduled to die, while trying to resolve his self esteem annd relationship issues.

He is given several chances to live in the bodies of those who are scheduled to die, while trying to resolve his self esteem annd relationship issues.

two versions of herself with 2 experiences?

personality identity shifting

twin uses twin identity

future soul enters past time periods doppelganger

demon enters dead persons body and lives as their identity on earth