MTL - Rise From the Humble - Chapter 1691 Coordination of artillery steps, bravery appears

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

When people awaken, their class gets ranked.F means nothing.SS means everything.Nobody talks about SSS ranks, because they aren’t real. Well, they weren’t real until he became one.Lucen Ivara was fine with staying average. Keep his head down, take low-tier jobs, eat something hot once in a while. That was the plan.Then his system came online.It didn’t follow the rules.There were no guides. It seemed limitless. There weren’t any safety rails he could cling into.Just a blank interface and a quiet message floating in front of him.[You are the first.]Now Lucen is crafting spells no one’s seen before, hiding a class that could get him killed, and trying to scrape by in a city where dungeon breaks, guild politics, and hidden power plays are part of daily life.He’s not looking to be a hero.But with power like this, staying invisible might be the hardest thing to do..

Ambrose Lu possesses the Eternal Longevity Body, granting him immortality and eternal life.Throughout countless years, he has traveled through myriad worlds, gained infinite experiences, and held various roles.He has been a leisurely Immortal Emperor, a tavern keeper selling wine, the mysterious leader of a sect known as the Carefree Sect, and a divine healer saving lives in his medical clinic.Additionally, he wields blade as the Green-Clad Sword Immortal, using his sword aura to sweep across the world!

After experiencing heartbreak from being abandoned, he enlisted in the military.

And then, he became a war hero.