Bakemonogatari Portable follows closely the story of the original light novels. Koyomi Araragi, a normal boy who was dragged into the world of the supernatural after becoming a vampire, although the player may also play as other characters outside of the main story. During his journey to return to being a normal human (albeit retaining some of the traits of a vampire), he meets a cold and sharp-tongued girl named Hitagi Senjougahara, herself a victim of an oddity that rendered her weightless. The game follows the story that the anime series adaptation has closely followed, although there are scenes that are added to the story in the game to expand on the original light novels' plot.