MTL - Medical Sovereign - Chapter 2031 conflict

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

Zhou Heng thought the news of an impending solar flare and natural disasters was absurd—until he died in the apocalyptic chaos that followed. Reborn ten days before the end begins, Zhou Heng now knows the truth: earthquakes, tsunamis, plagues, and even zombies will devastate the Earth.Armed with the Doomsday Sanctuary System, he has a chance to rewrite his fate, but there’s a catch—it requires a shelter to activate.With only ten days left, can Zhou Heng gather the resources, fortify his sanctuary, and prepare for the storm of humanity’s collapse?

Yao Tang, the daughter of the Yao family who mistakenly exchanged at birth, was finally found.

Kang Min-hyuk, the loser of the checkpoint, gained a high-level magical civilization and everything changed.