Narutaki Koyori

Position of the mark: On her left thigh
Curse:

Spoiler

Forbidden to open a door that has never been personally passed before

Gift:

Spoiler

Ability to accurately reproduce body actions

The youngest among the cursed people and the one who proposed to use their talents in helping those who are in need. She is always on her roller blades no matter where she goes traversing terrains skillfully thanks to her gift. That gift is pretty much useful in bed as well.