MTL - Record of the Missing Sect Master - Chapter 57

He died on Earth with nothing—no legacy, no power, and no second chances... or so he thought.After getting hit by a truck, a disillusioned young man awakens in the body of a boy named Zane, in a war-torn fantasy world where nations clash over power, and magic is the law of survival. Gifted a mysterious book from parents he barely knew—and now lost forever—Zane accidentally awakens the Void System, a cold, cryptic force that offers power... at a price.In a world of monsters, systems, and bloodshed, Zane doesn’t get a choice.Survive, or vanish into nothing

Being given a chance and reincarnated is nice and all, yet why do I have to become that male friend who just watches the protagonist flirting with his harem?---World: Kaguya-sama: Love Is War - Hyouka ----

Another year of enlistment season, the recruit company is a rare encounter in a hundred years, bringing together a group of unruly thorns with sky-high backgrounds!

When everyone was at a loss, Qin Yuan recommended himself to be a recruit company commander and began to build the strongest special force!

In the annual large-scale military exercise, recruit companies are allowed to participate and are responsible for simple logistics.

However, when the red side was retreating, a miraculous scene appeared on the battlefield.

The head of a reconnaissance regiment of the Blue Army: “Report! The red team cheated! Our reinforcement regiment was defeated by the enemy’s special forces, but the enemy actually made a poor excuse to call himself a recruit company!”

Brigade commander of a rocket brigade of the Blue Army: “Can’t you afford to lose? Special forces are not allowed to participate in this exercise! Your red team actually dispatched special forces?”

The Blue Army’s superior roared angrily: “It’s just nonsense! I was shot in the head with special forces in violation of the rules? You also quibble that you are a recruit company?”

Qin Yuan smiled lightly: Don’t pretend, actually… I’m bringing special forces!

- Description from novelbuddy

This legend tells the tale of the protagonist, Kuroki summoned to protect the demon king from the hero.

Kuroki, unbeknownst to him, suddenly came to another world. He was summoned by the demon king, Modes. The territory which the demon king overrules was in the midst of being destroyed because of the hero. He had no choice but to bow before Kuroki.

“Please save us, Savior Dono!”

Kuroki nodded, deciding to save the demon king due to an unexpected turn of event.