Apocalypse Hunter - Chapter 50, 51

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

He just became the newly-crowned movie emperor when he died a tragic (actually, very stupid) death. On his way to cross the NaiHe bridge, he managed to evade Meng Po and not drink her soup. Thus keeping the memories of the life that he just had.

But he would never have imagined that he would be reincarnated hundreds of thousands of years later. In the Interstellar era! If it happened to other guys, they would definitely want to be a mecha warrior. Don’t most men dream of that at least once in their life? But sadly, that’s not for him.

There’s only one goal in his mind – to be the number one star in the Interstellar era.

With the knowledge and skills he got from his past life, he would definitely achieve it.

But who was this annoying person who kept on pestering him?

A certain prince smiled in a scary and crazy way: Cook food for me or else die.

= a few months later =

A certain prince leaned over and moved his face closer: I don’t need food, I could just eat you.

A bad tempered yandere gong X a reincarnated movie emperor shou

*NaiHe bridge – a bridge that souls crossed to enter reincarnation

**Meng Po – the lady on the Naihe bridge who gives out soup that lets the souls forget their memories, thus entering the cycle of reincarnation in a clean slate.

In a future timeline, the earth was visited by a species known as the Slarkovs.
Having lost their home planet and in search of a new one, earth was the next habitable planet for them.

Humans and Slarkovs made a deal with each other in return for the Slarkovs living on earth.
The Slarkovs traded their technology and knowledge for a new home.
They were similar to humans except for some of them who had slight differences so fitting into the society wasn't a problem.
Over the years Slarkovs and humans began to mate with one another and reproduce offsprings.
This in turn created a new species known as the mixed-blood.
Centuries later mixedbloods could tap into their bloodline and perform unimaginable feats.

Gustav born into an age where bloodline determines everything, struggles to fit with a useless bloodline.
His bloodline only grants him the ability to change his hair color, destroying his hopes and dreams for a great future.
His fate is turned around when an unexpected situation leads to him finding a system that grants him the power to unlock and upgrade bloodlines by completing quests but he's baffled by two quests with a five-year deadline. Success will grant him unimaginable rewards...
But only one thing awaits him if he fails... Death!

Follow Gustav on his interesting journey filled with unprecedented adventures, danger and death, maybe?

Jiang Chen had unexpectedly found himself thrust into a world of cultivation, stepping into the role of a core disciple within a famed sect. Fated to be the villain, his future loomed with calamity. He had plotted against the protagonist, crippling his dantian and leaving him a disgraced outcast teetering on the edge of expulsion. Were it not for an unexpected twist, Jiang Chen’s part might have ended as a mere footnote in the protagonist’s glorious tale. Fully aware of his precarious position, Jiang Chen’s lips curled into a sly grin. Alone, he mused: ’Is the protagonist powerful? Without a doubt.’ ’But will I tremble in fear? Absolutely not.’ ’Why? Because I have the Immortal Great Villain System!’ ’Wait... there’s more than one protagonist?’ ’Well, isn’t that just perfect?’ With a determined glint in his eyes, Jiang Chen declared to himself, ’As the ultimate Great Villain, I will defy the will of Heaven and seize my place at the summit!’