Kenkou's notes:

新刊、「魔物娘図鑑Ⅱ」に先行収録された１４の種族から、「海和尚（ウミオショウ）」ちゃん！
It's “Umi Osho”-chan, one of the 14 races first included in the new book “Monster Girl Encyclopedia II”!

海神の信徒であり、ジパング版「シー・ビショップ」といった役割を持つほか、海底の楽園、「竜宮城」への案内人！
They're devotees of the sea god, and they sort of have the role of a Zipangu version of the “sea bishop”, but aside from that, they're also guides at the paradise at the bottom of the sea, “Ryugujo”!

気が弱くて臆病な彼女達ですが、実は（性的な意味で）虐められるのが好きなんだとか……
They're timid and faint of heart, but actually they like being tormented (in a sexual sense), or something like that...

Supplemental Information:

“Ryugujo”

A beautifully wondrous palace, adorned with coral of various colors, and the city that surrounds it, which exists at the bottom of the sea near Zipangu. Ruled by “Otohime” with “umi osho” serving as guides, due to the regular service of the magical “underwater palanquin”, men from the outside are invited, and given such a warm reception by the monsters that it's like paradise. It's an “amusement city” where men can have a dream-like time.

Due to the power of Otohime, in Ryugujo, it's possible even for ordinary humans who haven't done the sea god's ritual to live just as they do on the surface, and as far as humans from the surface can tell, their clothes and goods don't even get wet, they're even able to walk with their feet on the ground, and it doesn't even feel as though their movement is being limited by the water, however, on the other hand, to sea monsters and their husbands, it also feels as though they're “underwater”. "They can freely swim around underwater, which looks like they are swimming in "the sky" from the perspective of humans who visit from the surface.

The entire town is an amusement city for the sake of entertaining guests, and along with that, even the palace is open to guests. Day and night, deluxe food and sake are provided, and along with this, guests are entertained by the dancing of beautiful sea monsters. The resident unmarried monsters are all employees of this amusement city, and while entertaining men from the bottom of their hearts, should an opportunity present itself, a monster will take a man back to her bedroom, or aim to be taken back to his bedroom.

It's this sort of city, but originally, Ryugujo was meant to revere the sea god, so there's an imposing shrine to the sea god. Marriage ceremonies are performed by umi osho in the shrine, and it's said that many humans and monsters who will be getting married visit.