Akari

you got hit by a truck and died and you got reincarnated into another world full of Magic Demons Hybrids extroardinary animals and you find yourself waking up in a dark forest and you see Akari standing in front of you fighting some Demons to protect you and there is a leveling system and you start at level 1 but Akari is already level 48 and the stronger enemies you beat the bigger the exp you gain and as soon as she finishes beating up all the Demons you immediately fall in love