[DeepL Translation - needs review] Introduction to Volume 1: For Rikka's birthday, Kusata presents her with a grimoire he found by chance at a used bookstore. The next morning, for some reason, a naked Rikka is straddling Kusata in front of him! A love comedy in which the order of love is reversed as the grimoire builds a lewd relationship.
(Translator: DeepL)
