MTL - I Was a Top Student In Conan, But I Was Actually An Onmyoji - Chapter 8

In his past incarnation, Lu Xuan was the youngest Celestial Lord that the universe has ever seen!
An accidental rebirth brought him back to a thousand years before, where the Earth had just begun its spiritual reawakening. When he stepped onto the way of cultivation for a second time, he swore to rewrite all injustices suffered in his past life, and defeat all enemies that dare stand in his way!
Let invincibility be his cultivation and the path he treads. In this life, it is his destiny to be invincible!

Luo Fei does not fear being rivals in love with Xi Yanqing; what he fears is that they have transmigrated to ancient times and become betrothed to each other!

Father Luo: Eh?! Not getting married? How about I break your legs if you don’t get married?!

Luo Fei: Dad, ahh, Dad! Aiyo, stop beating me now! I’ll just go get married okay?

Xi Yanqing: You know that you can’t escape and now you’ll have to pay for it. Did you leave without bringing your IQ?

Luo Fei: You with the surname Xi doesn’t have to sleep on the bed on the wedding night!

Xi Yanqing: Oh.

Luo Fei Who on His Wedding Night was Pressed to the Trunk of a Peach Tree at the Entrance: …f**k you surnamed Xi! This isn’t what I meant!!!

- Description from Novelupdates

Spiritual energy ecovery brought about fundamental changes throughout the entire world, and posed an imminent threat to it. Chen Yang died in an accident and reincarnated to become a tiny koi fish inside the fish tank in his own home. Just as Chen Yang complained about the unfairness of destiny, he awakened the Evolution System. Thus, with his sister’s feeding, Chen Yang started his insane evolution. As the whole world sank deep into apocalypse, Chen Yang descended from the skies to crush everything.

He had evolved from a tiny koi fish to a gargantuan dragon. “This world shall be ruled by me!” When the fish playing in the waters was frightened by the net, it jumped over the Dragon’s Gate to become a real dragon. This is a story of how a loli raised a giant dragon, and dominated everything.

This novel is also known as Don't Mess with the Dark Princess

When trash becomes a genius—one word: Fierce! Two words: Two-faced! Three words: Too heaven defying!

She is the foremost and outstanding armament refining master. Passing through a dynasty, and became a publicly humiliated and bullied Third Young Miss. Ancient beasts, too outrageous? Obediently become a docile pet, or I’ll make you into soup!

Ninth rank talent, rare talent in a thousand years? She was born with a godly constitution, crushing all geniuses!

Peak level Profound Grade Armament, beyond priceless? Sorry to embarrass, but the bowl she uses to feed the cat is already at the God Grade….. she possessed a pair of eyes that could see through everything, yet she couldn’t see through—him!

Merely exposing his demonic smile, Prince Mou lightly loosened his belt: “Can’t see through? Do not fret, you can slowly view when you return to the room. I’ll allow you to scrupulously inspect from head to toe.”

- Description from Novelupdates