A manga anthology based on DMM and Nitro+’s browser game Touken Ranbu -online-

The orphan girl Angelique lives in Hidamari Villa with four other comrades who make up the Orb Hunters. They aid her in purifying otherworldly creatures known as Thanatoi who attack the populace, draining them of their life energy. Two large organizations also oppose this threat, while its members try to discover more about the Orb Hunters and a possible connection with the legend of the Queen.

Hayate and Choko are twins who are as different as night and day. Choko acts like a shallow princess whose main concerns are her looks and cute things, while Hayate is the cool but overprotective brother with a penchant for sabotaging potential relationships for Choko. Naturally, Hayate plans to act accordingly when Chouko confesses to the school’s prince, Tsukiyono (albeit, mainly for his looks). After an argument over Choko’s love life, Hayate and Choko end up tumbling down some stairs together, and bizarrely find they’ve switched bodies. Even worse, and much to Choko’s horror, Tsukiyono starts to fall for Hayate who is now in Choko’s body.