Saiki Misaki has been able to see ghosts since she was a kid. Now, working at an S&M club, her spare time goes to sending the spirits off to the other world by having to make them realize they're dead and have to leave. This would supposedly be a little bit easier if you didnt have a background of hardship and loneliness... and a perverted employer.

Gaiarth - a world devastated by a cataclysmic war, where pockets of humanity struggle to survive amidst the wreckage of technologies made magical by ignorance. Gaiarth - a world where artificially intelligent machines doggedly pursue their programmed imperatives: to protect, or destroy, humanity. Gaiarth - a world in which an old and terrible evil has reawakened, threatening to once again bring forth Armageddon!

Sinbad and his friends run afoul of a storm while riding on the ship Bahal. Ali sights an island, which the ship heads toward to make repairs. Sinbad and Sana board a dinghy and land on the island. Sana sees a vision of a magical lamp, and Sinbad and the others set out to find it.

The story centers on Nayu, a middle school girl who shocks her schoolmates on the first day of school by wearing black lace panties. She likes this kind of underwear, and she tries to "spread the word on the merits of [these kinds of] underwear" via an underwear club with her schoolmates, who are worried about their bodies' development and which underwear to choose.