Waltraute-San no Konkatsu Jijou
ヴァルトラウテさんの婚活事情
A young man from the human realm becomes enamored with Waltraute, one of four Valkyrie sisters. He expresses a desire to wed her, but she presents him with a seemingly impossible challenge meant to dissuade him. Undeterred, he resolves to complete the perilous task in hopes of winning her hand in marriage.