[Comprehensive] Is it okay for the groom of the unhappy monster's house to be a groom?

①Legislature is sick, and the unhappy monster Ananzhu and Feng Gongren Huae go to Gaotianyuan Hell to see a doctor. ②Abe Harisai and Ashiya Hana's childhood encounter 12 years ago. ③Abe Seisai’s lifespan has accelerated, and the truth about the death of the previous hermit master, Hanae married Abe Seisai’s master as the bridegroom, and together they summoned the gate of the hidden world.