Her Cultivation Diary - Chapter 42 - : Patient No. 42 asks_1

Xia Yuqing is a shut-in+fujoshi from the 21st century. After an accident, she transmigrates into the body of a young princess forced into a political marriage to another country.

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

He mocked the omegaverse. Now he’s living it—with a baby on the way.Souta Tachibana was just your average, overworked office drone—until his BL-obsessed coworker introduced him to a trashy omegaverse romance novel. Curious (and a little horrified), Souta read it for laughs. But then he died in an accident.Now, he wakes up in the body of Lucien d’Armoire, a minor noble in the empire of Aetheria. No plot relevance. No destined lovers. Just a quiet, boring life as a background beta.Until one morning, he throws up into a chamber pot… and his doctor says something unthinkable:“Baron d’Armoire, you’re pregnant.”Which is impossible.Because he's male.And straight!And because Betas can’t get pregnant.…Right?Except Lucien is no Beta. He’s a rare male Omega. Apparently, during one reckless, drunken night, Lucien slept with an Alpha. Now he's pregnant, confused, and definitely not ready to be a father. To make matters worse—he doesn’t even know who the father is.

A generation of hegemons, betrayed by betrayal, besieged by forty-nine strong men, tragically killed and robbed the mountain, re-lived once, he will re-enter the peak; strong rise, into the chaotic star field, exhausted 100,000 strong, Wusheng dead and kill, The impact is high!

- Description from 69shu translation