Infinite Mana In The Apocalypse - Chapter -1 - Ranks/Levels/Realms(Spoilers as of 317)

Everyone believes Lin Zhao Xi’s a genius.

Only she knows she’s looking back on years of experience in math competitions as a basis to “cheat”.

Until one day, her idol quietly looks at her.

* * *

Time and space overlap, returning thrice.

— The past can change you.

- Description from Novelupdates

This world has Fox Fairies, River Gods, Water Monsters, Great Demons and Cultivators who seek immortality.

By activating their Dharma Eyes, cultivators can see all kinds of demons and ghosts.

Refining a flying sword, they can kill enemies thousands of miles away.

Their all-seeing eyes and all-hearing ears allow them to observe everything around them…

The second young master of the Qin family, Qin Yun was one such cultivator…

- Description from Novelupdates

After falling to my death, I woke up with two bodies?!Reincarnated as both a humble commoner boy and a privileged young noble girl, our protagonist enjoys their new chance in life with two different perspectives. Although they only wished for a peaceful life, the world had other plans in store, presenting them with a few unexpected obstacles along the way.Now, they find themselves confronted with bandits, secret evil organizations, terrifying monsters, and... romance?

[ Fusion Successful ][ Water Toad + Sky Dragonfly + Nightmare Moth + Bluefang Hyena= Nightmare Hydra ]----Yuki Igarashi, once a terminally ill boy confined to a hospital bed, dies with a silent wish for strength and freedom.That wish is mysteriously granted when he reincarnates into a fantastical new world. Not as a human, but as a newborn Frost Dragon.With his memories intact and curiosity alive, he is soon greeted by a mysterious system called the Dragon God System, which mistakenly binds itself to him, claiming he is not its original host. Still, it is now eternally bound to him.Despite his infant form and weak body, Yuki discovers he can extract bloodlines and skills from other creatures using the Dragon God Codex, and fuse them within a mysterious space called the Fusion Lab.Even more shocking, a glitch in the system allows him to repeatedly Fuse bloodlines without depleting them, opening the door to limitless growth.