MTL - Immortal Emperor: Reborn in the Mixed City - Chapter 11 Spiritual power release!

This book, alternatively titled “The Heavenly Court of Great Qin,” unfolds the tale of Qin Jun, who finds himself transported to a realm where he assumes the role of a demoted prince. Despite the challenging circumstances, destiny has more in store for Qin Jun than despair—enter the Mythology System!Under this system's influence, any character from mythology can be summoned into existence - The awe-inspiring might of the Supreme Heaven Great Sage, Sun Wukong, capable of shaking mountains and rivers with a single strike of his staff; The Thousand-Mile Eye and Favorable Wind Ears, acquiring profound perception of everything in the world.The Tathāgata Buddha, holding the Buddha Land within the palm of his hand, becomes an indomitable force from which no one can escape. Amidst this divine realm of Gods and Demons, Qin Jun solemnly pledges to rise as the preeminent Divine Emperor, determined to carve his path to unparalleled strength.

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.

He, without doubt hates her.
What did she do to deserve his hate?
The person who she treated well like a brother did not even bother to notice it...

Years passed…

He needs to get married.
He needed a wife.
So she offered herself.
It was a marriage that will benefit both parties he said.

An ordinary youth living in the year 2050 in the Western calendar accidentally came to a fantasy world created by the collision of magical elements and supernatural technology at the other end of the dimension…

- Description from novelbuddy