MTL - Konoha: Inventory of the Top Ten Show Operations at the Beginning - Chapter 264

One day, Katsuragi Daichi and his classmates found themselves in a different world. The god who summoned them to another world divided its power and gave it to them, saying that it wanted Daichi and the rest to defeat the Demon King as heroes. However, Daichi alone was given no abilities. And sure enough, Daichi was thrown away and used as a decoy in a demon’s den. Eaten by a demon, Daichi had lost consciousness and thought he had passed away, though when he came to he noticed his statuses had skyrocketed. He had obtained『Revenge of the Resented』. Every time he died, his abnormal ability powered up.

Chu Qianze turned the pen in his hand in a circle and smashed it against the drum next to him, the loud drum sound resounding around him.

Facing the two people who looked over at him together, he pulled out a polite smile, which was very dazzling under the neon light.

“I’m sorry, you are ruining my eyes.”

Later:

Feeling the gazes of the people around him, the flashing lights that flared from time to time, and a few gasps, Chu Qianze’s mouth twitched: “Is this a new way to surprise people?”

***

Chu Qianze, who had just arrived in the world and was getting acquainted with his surroundings, was inexplicably pulled by a man and was held in his arms.

“I already have someone I like; it’s him!”

Chu Qianze looked at the person blankly, but saw that the other person turned his eyes away, his breath a little disordered.

“..?”

- Description from Novelupdates

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 ----

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.