Toaru Majutsu no Index: New Testament - Volume 18, Chapter 4: A Worthwhile Battle at Heaven’s Peak - "Light".

As the youngest son of a top chaebol in the Blue Star entertainment circle, Lin Zhibai thought that his life was just to eat and wait to die.

Until that summer.

The system fell from the sky, and he awakened the memory of his previous life.

“So I’m from Earth?”

- Description from novelbuddy

“If I don’t die… I swear I will act on all my evil thoughts..”

Not exactly everyone’s typical thought when they’re about to die. What will a cowardly young man do when reincarnated with the evil powers to redefine his destiny? Can the natural kindness of human nature triumph over evil? Will he become the cold-blooded demon king of legend, or will he forge his own path and rain down another kind of terror?

I reincarnated as Luna, a supporting character who is accused of ruining the heroine and hero’s relationship, and is mu*dered. I’m not interested in someone else’s man, but the heroine’s friends bully me every day. “Why are you trying to get close to someone who’s already taken?” “That’s right, please stop! Why are you doing this?” “Stop doing such terrible things!” So Luna decides to announce it in front of everyone. “I don’t want someone like Fersen even if you beg me to take him so stop bothering me. I’d rather date Anthes Vincent, who’s rumored to be insane.” And soon she meets someone who she never expected to meet…… “I heard you have an interest in me? The truth is, I do too. Is it a coincidence?”

The Great Film Emperor, Ji Mian thinks that Young Master Xiao Jiashu is an arrogant, poison-mouthed, spoilt, rich snob who exploits his strong background to ruin people’s lives on a whim. But when he somehow obtains the ability to read minds, Ji Mian comes to realise that Xiao Jiashu is probably the most adorable person in the world.

This is a story about the rise of the acting-fanatic, Xiao Jiashu, as he silences his haters and wows the world with his magnificence.

- Description from Novelupdates