Yuusha No Musume To Midoriiro No Mahoutsukai勇者の娘と緑色の魔法使い; The Hero Girl and the Green Magician; Yuusha no Musume to Ryokushoku no Mahoutsukai

In the depths of a demonic castle filled with monsters, a young hero meets a boy gifted by the supernatural. With a common goal but wildly different motivations, the most unlikely pair sets out on a quest to defeat the Dark Lord!