Ore-sama na Doukyuusei no Kenzoku ni Narimashita
@ch 3 Uke is a vampire and doesn't get along with seme. Tried to get seme to become his servant by biting him, but turns out seme is a mermaid so the effect gets reversed and seme becomes uke's master.
True End of Those Days
@ch 2 Uke is a demon king and seme is a uni student who transported to years back and became a hero and defeated uke. To show peace between the demons and humans, seme proposed that the demon king uke and hero seme get married. Now, demon uke works hard to become a good wife for seme in the human world. Both living together as a married couple.
The Affairs of the Other World Depend on the Corporate Slave
Shachiku no Ore ga Ero de Isekai Sukuu tte!? ※Tadashi Ossan Shika Inai
@ch 3 Uke is an office worker, gets transported to another world. He has overflowing yang powers which is sexual powers, and needs to save the world from the yin powers.
Bittersweet Howling