FFF Class Auto Hero: The Weakest Class Turned Out To Be The Strongest? - Chapter 31: Echoes of the Abyss

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

I was a fool to believe that I, a mere red, could play God.A fool to think I could change the world, to balance evil with good.A fool to trust that those dearest to me would always remain by my side.In this world, where blood reigns supreme, a single misstep is all it takes to lose oneself.Ren, my dear little brother,I hope you still watch over me, even though I am unworthy.I’ll be with you soon—just wait a little longer.If you always want to stay up to date, find out when this book will be physically released, when the manhwa of Origins of Blood will come out, or see more content like novel art, then join my Discord server!

The Main Character, Watari Karito, is a veteran player of a Military Shooting VRMMORPG.

One imperial edict and the family’s calculation, the sweet, adorable her met the cold him that was up high. She became his little princess consort. Everyone said that Prince Ying of Western Xuan Empire was shockingly ugly, cold-blooded and ruthless. They laughed at her that she had mistakenly entered the tiger’s den with her life in danger. But she just laughed that everyone in the world couldn’t see the wider picture, and were stupid and ignorant. The ugly appearance was actually beyond gorgeous, cold-blooded was actually gentle and sweet. She only wanted to hide him away and not allow other people to peep at him. “Big Ice Cube, take off your mask and let this princess have a look!” She propped up her chin with saliva flowing down.

“Want to look?” A certain person’s lips hooked into a devilishly charming smile, saying. “Then first, hand over some down payment…” This is the story of a sweet adorable female and a two-faced male’s journey to fight enemies and kill strange things, while pursuing a romantic relationship that was absolutely full of loving spoiling, hilarity and hot-blooded action.

- Description from Novelupdates