The Hawaii trip continues as Haruhiko puts his first enchanted weapon to use, endangering his own life to protect his classmate Mana Kimura from the demon Navy. Will he be able to fend off the horny demon? And if he stumbles upon an opportunity to look into Yukanaria's past, will he take the chance to see what her relationship with Fulcanelli was really like? Find out in yet another volume of tough decisions for Haruhiko.