MTL - God! I Turned Into a Turtle - Chapter 273 atavistic

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

On her wedding night, framed for infidelity and to be burnt alive?Chu Qianli laughed heartlessly, “I've already written the divorce letter for you, farewell.”Feng Yexuan seized her firmly, his cold and sinister voice cutting through the air, “Thinking of leaving? The only way out is over my dead body!”…The Divine Doctor unexpectedly transmigrated into the unlearned Princess of Prince Xuan, and Chu Qianli only wanted to live an easy life without any ambitions.But she inadvertently caught the attention of the obsessive and insane Prince Xuan and accidentally got spoiled to the heavens!One day.The officials approached with gloomy faces, “Prince, the Princess is causing chaos in the Golden Hall again, please reassert your authority!”Feng Yexuan knelt before his wife with a thud, presenting a “taming husband whip” with both hands, “Lili, I've ripped their mouths for you, can you be a little gentler?”

“Breaking News! A 28-year-old IT worker beats three university kids to death with a spiked bat over a dog!”***Following the revenge, John took his own life in stubborn resistance, but that wasn't the end. He and his dog, Alfred, found new life after making a deal with an Eldritch God, Chuthulos.The duo reincarnates in another cosmos where Humans live an intricately connected life with Monsters as Tamers.However, in this perilous journey where his exposure to higher powers can lead to not only his death, but of the entire Eldritch Cosmos, John is not without help, for he receives the Rune of New Beginning, a power shaped into a system made from Eldritch Ancestor, to aid him.“So I can inspect all Monsters, eh? Awesome.”“Evolution Pathways? Cool!”“A private world where I can create biomes and habitats for monsters? A Monster Paradise?! Holy Land!”“Hey, what new function are you going to add in the next level up of the Rune, Chuthulos?”With all stacks on himself, John is determined to make the most of his new life with Alfred and his Pet Monster companions and keep his end of the bargain.

The protagonist travels through Shu Mountain and becomes a demonic dragon guarding the heavenly book in Dinghu Peak.