Avatar Online - Chapter 20: Ice Queen's Lair

Liola—the best assassin in his world—has vowed to kill no more. He was being chased by an assassination organization when he accidentally dropped into a parallel universe: through a dimensional gate and into poor teenager Kaiser’s apartment. Instead of going to the government shelter for lost dimensional travelers, Liola and Kaiser wind up going to school together.

Liola has been trying his best to live the life of an ordinary person, but after certain things happen one after the other, he begins to realize that being an ordinary person could be harder than being an assassin.

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

After finding himself a poor man in a world of Cultivation, Magic, and infinite possibilities, William has to do everything in his power to survive. But with the knowledge of modern books, movies, and a System granting the ability to upgrade his talents, William is prepared for anything! Or...is he?Follow William, his Potential System, and his chaotic character as he improves his strength from Peasant to Primordial Being!Don't worry, he won't cause too much chaos...right?

In this captivating fantasy novel, Luo Mu has spent fifteen years in a mystical world, feeling disheartened by the belief that hard work yields little reward. Just as he begins to lose hope, a miraculous system activates in his life—the Heavenly Path Rewards Diligence System.With this newfound power, every effort he makes leads to astonishing gains, governed by a unique critical hit mechanic that can amplify his rewards by up to ten thousand times. As he diligently practices his cultivation techniques, immerses himself in ancient texts, and rigorously trains in powerful martial arts, he experiences unprecedented successes: gaining rewards that skyrocket from hundreds to thousands, and even ten thousand times his initial effort.Years later, as Luo Mu stands at the zenith of strength and ability, he becomes a figure of admiration and inquiry. When asked how to achieve such greatness, he simply smiles and states, “The Heavenly Path rewards diligence; it’s all about hard work.”This tale explores themes of perseverance, the value of effort, and the extraordinary possibilities that come from dedication and hard work in a richly woven fantasy world.