Forge of Destiny - Threads Interlude: Summer's End

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

A martial art expert from the Song dynasty lives like a Phoenix that can live again in another body after death. This time, he happened to take over the body of a Japanese high schooler who is also a victim of bullying and has a bit complicated family circumstances.

The mid-level boss of my company’s AAA-game.

Shao He, heir to a family renowned for medical and poison skills, a top special agent of the 21st century, unexpectedly transmigrated into the body of a pathetic Madam Marquis who had been tortured to death! And on that very night, she was thrown into the Mass Burial Mound!Looking at the newborn in her arms, Shao He resolved to live a splendid life in this foreign world!From then on!She was the Divine Doctor who aided the world!She was the fearsome Poison Queen!She possessed wealth to rival nations!She was also an astonishing scholar!And the Marquis, filled with regret, wished he could kill himself on the spot, “He'er, I was wrong, you...”“Shut up, I am now the Empress!”