MTL - Don’t Covet the Beautiful System!! - Chapter 108

With a father as strong as the highest heavens themselves, Gravis wasn't required to step into the cold and ruthless world of cultivation. But when Heaven used him in a scheme to get back at his father, Gravis realized that he needed strength to gain true freedom.

As long as he remained his weak self, he would always remain beneath Heaven’s oppression. Only true power brings true freedom. To gain strength, Gravis ventured into the lower worlds to start his cultivation under true life and death tempering.

Only a strong will, which had been forged in striving for every resource available, would allow him to reach the peak. Heaven’s strongest weapon was Lightning of Divine Punishment, and only if he made this weapon his, would he have a chance.

So, to overthrow Heaven,

Lightning Is the Only Way!

Yet, the path to power is painful.

Not everyone reaches the peak.

But Gravis will!

No matter how much pain he feels along the way!

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

Ye Xiwen was previously only an ordinary university student on Earth, but unexpectedly crossed through into the world known as the Zhen Wu Jie world! In this world, formidable warriors are capable of turning over mountains and collapsing the ocean, destroying the sky and extinguishing the earth! He originally had ordinary aptitude, because of that he received the mysterious special space! Any martial art can be deduced within the mysterious space, other people practice for decades, he only needs a year! So long as he has enough spirit stones, any talents he faces are all floating clouds!

- Description from Novelupdates

What got summoned was the world’s strongest sociopath.