MTL - The Legendary Mechanic in Marvel Universe - Chapter 50 found it

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

Swordsmanship and Dao unite? Shattering the void? Stop joking, speaking of Long Ao Tian transform into a girl body, male pig’s foot and female pig’s foot (internet slang for male lead and female lead) ‘s luck turn around, absolutely crushing people.
Wu Zhe, nicknamed no JJ, transmigrated and mystically fused together with a biomech.

Others pass through and become Japanese girl, he transmigrates to a Japanese girl that could be (thick fog)…..

Getting jailed right after transmigrating, suffering thirst and hunger; joining a sect and is watched attentively, wants to turn her into human cauldron; travelling in Jianghu and is forced to participate in trials, even joining in suicide squads….

Yet Wu Zhe remains alive and kicking. Because…. This new body seems to have a lot of mysteries, unexpectedly could rely on womanly basis to evolve into different forms to survive.

Bosom isn’t flat how one can pacify the world, breasts aren’t big how one can gather people’s will (*). This is the biomech’s joyous life in XuanQi world.

Wu Zhe says: “The most fortunate after transmigrating is, perfectly justifiable to walk in female hot spring….”

- Description from Novelupdates

After getting hit by a truck in an attempt to chase down his brother's bullies, Alex in transmigrated into the body of a weak mage in a fantasy world called Eldora.As expected, transmigration can never be complete without a golden finger! Shortly after waking up in his new body, Alex awakens the almighty path system.But that wasn't all, a more shocking discovery almost blew Alex's mind away.....System is crashing!! System is crashing!! System is crashing!!!![Due to the system breaking down, several perimeters of the system have been broken. Required exp for leveling up is now fixed, repeatable missions no longer have limits and can be completed continuously even when capped. Penalty function disabled, rewards for missions are now fixed].......Alex's system got broken and a lot of functions stopped working but this was a good thing because Alex can now level up continuously without anything to slow him down.......Armed with such a system, join Alex as he journeys to become the strongest mage in this new world and what his reaction would be after finding out the secret of his system and why it had broken!!

One day, the majority of humanity had a collective thought.

‘I wish the world would just collapse.’

And then, that wish came true.