Some spoiler from korean review

This is a new world. Where good people live in "castle" / "House". The castle itself has like 5 grades (like rings).
Uke wants to be free from debts and lives in the other ring as resident.

The military developed male pregnancy. It is to make superior soldier just like seme. Seme is some kind super human. He doesn't need surgery or stuff like that if he was stabbed or hurt, he just need a pill or meds and then he will be healed. Many people wanted seme's seed as in to be fucked so they can get pregnant with seme's child. Many people put aphrodisiac in seme's food but seme has similar constitution with uke (drugs don't work on them orally). Seme wanted to retire/discharge from military. He did illegal mission which is raiding this place. He wanted to find evidence second Lieutenant developed illegal drugs.

Actually, 2nd lieutenant developed drugs to make male pregnancy, and use uke as test subject (uke didn't know anything about this). Seme only knew uke was the guinea pig but he determined to make uke pregnant. So that he can have prove that 2nd lieutenant developed illegal pregnancy drugs. Turned out, uke was born from male father. So uke's ability to get pregnant is hereditary (not from the drugs), but no one knew.

Idk if you wanna continue or not because this is rape (maybe coercion) with baby trap. I mean, uke himself doesn't know he is capable of male pregnancy. He is so young. Only 21yo. Lived hard life his whole life now he is suddenly had to be pregnant because seme wanted proof. So weird. Idk.

This is spoiler that I read. So if the perspective of reading is different, please put your summary on replies. Also, the commentator said, don't hate seme. But I still feel bad for uke. Regardless, maybe I'll continue to read this.

Oh btw. Uke can't get addicted to drugs or be affected if ingesting orally. So seme will use piece of cloth and drugs/aphrodisiac wraps it around uke's neck. That's how uke can absorb the drug.

Please share me any spoiler if you have. Thanks