The villainess has her body taken over, can't do anything but watch the transmigrator change her life out of kindness, and then gets her body back when the transmigrator leaves the body. The plot is about her avenging the tranmisgrator whom she's grown to love.

Yeah any cmedia I've been managing to watch lately has an episode length to 20-25 minutes... And I still haven't finished anything on my own yet. XD