Sounds like salt society
believe it or not i haven't read that title
I believe you, it's just everytime I read bl pregnant omega, they always running away, so I'm not surprised anymore
The perfect prediction if it follows the usual clichés that still keep me hooked.
By the way, you haven't read the novel "Oops! I Seduced My Sister's Fiance and Now I'm Pregnant" (I know the title sounds absurd). But it's excellent, besides being an isekai, and the central theme is precisely pregnancy, so the protagonist has no chance of running away.
tagging this just in case it really becomes a spoiler but i bet the uke will consider terminating the fetus but then he chickens out! after the drug subsided and they can go with their previous life, uke will go mia again and postpone his education
the seme will feel betrayed but also chase him down only to find uke with his big belly! uke then lies again saying that this baby is someone else's and seme believes and leaves him alone before some incident and he finds out the baby is indeed his and he goes back to uke and uke gives birth and they raise their child together
or time skip seme accidentally meets uke again but with a little son/daughter but uke says this child is his with someone else, seme stuns but tries to weave his way back into uke's life while trying to find out abt uke's mate and after tens of chapters and 3 events sene finds out about the truth
idk i think i've read too many omegaverse with runaway omega