Mirai Andou finds herself in the middle of a body-swap mishap in this OVA bundled with the ninth volume of the Itsuka Tenma no Kuro Usagi novels, alongside series regulars Himea Saito, Taito Kurogane, and Gekkou Kurenai. The comedy runs alongside a crossover segment featuring the cast of The Legend of the Legendary Heroes, mixing the two casts into one bonus story. It functions as a stand-alone extra rather than an entry into the main plot's vampire-curse storyline.