Kuro no Maou - Chapter 458

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

MAIN CHARACTER GET TRANSFERED TO ANOTHER WORLD WHERE HE USE TO INCREASE CULTIVATION OF HIS WORLD

[Kill level 4 weirdos (characteristic: silent), you can redeem 3000 system points, or the system can be devoured to extract characteristics! 】

Chen Ge listened to the voice in his mind and looked at the wild cat that was killed by his own hands. His expression was a little subtle for a moment.

Returning to the community, looking at the friendly security guard, the system prompt sounded in Shen Ge’s mind again——

【warn! Found a level 5 weirdness (Characteristics: three heads and six arms), detected that the host’s current strength is definitely no match for him, please flee the scene quickly! 】

For a moment, looking at the oranges handed over by the security guard, Shen Ge didn’t know whether he should accept them or not.

The next day, Shen Ge went to the supermarket and bought a box of instant noodles and some snacks.

[The host sneaked into the mysterious and haunted area of ​​Level 6 and collected a large amount of supplies. His courage was astonishing and he was rewarded with 1,000 system points! 】

Shen Ge was about to scan the QR code to pay, but his hands froze in mid-air…

- Description from novelbuddy

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.