Billion Dollar Player - Chapter 1: Limitless

[Quick wear from the male protagonist’s perspective]
The cool and handsome arrogant brother led a dragging oil bottle down to earth to save the healing system of the BE female supporting role, Kuaishou Xiaotianwener.
“As long as it is the star of my big star sea, no immortal is allowed to die!”
.
Love Show’s Little Green Tea
The goblin of the diamond giants
Xiao Wenqing in the old film of the Republic of China
The little hind legs of the girl group out of the circle
The little green plum with the head in love
Little White Flowers in the 1970s
half princess
Li Daitao’s poor little pity
little rose of the court marquis
The little virgin who loves the brain

Content tags: rich and powerful family female match sweet text wear book
Search keywords: Protagonist: Jiang Shi ┃ Supporting role: His Royal Highness Dark Star ┃ Others: Daxingchenhai
One sentence introduction: Operation Star Rescue

- Description from novelbuddy

Tenjou Yuuya has been a bullied boy since the past.He lives in the home of his beloved grandfather while he goes to school. As usual, he receives a harsh bullying, and he takes an extended absence from school to have some time to heal his wounds.While on this long time of absence, he takes the opportunity to clean his grandfather’s house and goes to a room he never went before, where his grandfather keep many different objects that he gathered from his travels around the world. While he was arranging the objects, he found a door not on a wall among the objects.Out of curiosity he opens this door, what he found on the other side was…

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.