Souta and Rikka are officially boyfriend-girlfriend, but they still haven'tbroken the demon Zepar's curse. Then, one day, Makoto, who had seen Rikka's"grimoire," falls prey to the curse herself. She consults with Souta and theybegin to have a side relationship to keep Makoto's symptoms under control. Butthen Makoto leans into her curse and doesn't even want to be free of it?! Whenthe grimoire's curse catches Makoto in its clutches, Souta, Rikka and Makotoform a love triangle?!