MTL - Still Saving The World Today (Switching Worlds) - Chapter 8

Kawaki, who was born in the dragon vein of a planet (Altana), first met Umibozu who was traveling in the universe, and his girlfriend, Kouka.Later, he came to Earth by accident and met the teacher who affected his life —Yoshida Shouyou.He also met a group of friends. The most conspicuous among the group of friends is a fool with silver hair and naturally curly hair, a short man with purple hair, and a little devil whose catchphrase is “Not Zura, it's Katsura!”Gintama Doujin, not transmigration.

Genius Female Forensic Scientist VS Tough Criminal Police Captain[Mystery + Detective + Sweet Romance + High-IQ Crime + Serial Killings + Psychological Profiling + Suitable for the Faint-hearted]Schizophrenia, antisocial personality disorder, high-IQ crimes… This is a world where psychopaths run rampant.The Cat Fetus Case, the Lovers’ Butcher, the Angel of Death… Evil delusions always invade reality, accompanied by violence.Their First Meeting:Mu Mian asked very sincerely, “Hello, would you be willing to donate your body to me after you die?”Later:Fang Rui: “If I fell into the water along with a victim’s corpse, which one would you save first?”Mu Mian: “You!”Fang Rui looked at her with some surprise.Mu Mian: “Because the corpse will float by itself~”

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

The Hero’s party was attacked by a large group of powerful devils. The party will no doubt be annihilated if this were to go on.