Isekai de Saikyou Mahou no Tsuma ni Narimashita -Oku made Michiru Fumetsu no Ai-I Became The Wife Of The Greatest Demon King In An Alternate Universe -A Deeply Satisfying, Immortal Love- ; Isekai de Saikyou Maou no Tsuma ni Narimashita - Okumade Michiru Fumetsu no Ai ; 異世界で最強魔王の妻になりました～奥まで満ちる不滅の愛～