[Marneko] Kitsune no Yomeiri (COMIC Unreal 2016-12 Vol. 64) [Wrecking Army]

A disowned son returns to his family's Shinto shrine to sort through his late father's belongings and unearths a wicker box hiding a sacred miko costume—one that remakes him into a curvy shrine maiden destined to wed the ancestral fox goddess. The awakened kitsune claims her promised bride body and soul, training the newest girl in how her ancestors served the gods for generations, from worshipful oral devotion to a 'traditional clamping position' that leaves them both drenched and trembling. When the rites are complete, the eldest son vanishes into his divine marriage, leaving his sister wandering the empty shrine and calling for the big brother who is now the fox's bride.