Love Grimoire ~Saikyou Doutei no Yuusha-sama ga Kekkon shinai to Sekai wa Metsubousurusou desu~

Love Grimoire - It Seems That the World Will Be Destroyed Unless the Strongest Virgin Hero Gets Married, Love Grimoire ~The World Is Doomed Unless the Ultimate Virgin Hero Gets Married~, 恋愛グリモワール～最強童貞の勇者様が結婚しないと世界は滅亡するそうです～