MTL - This is How the Heavens and the Worlds Come - Chapter 640 causal prototype

Based on the popular Vocaloid song .

Rin, a young angel (presumed female, but angels don’t have clear genders) falls in love with a young human girl, Miku. However, their love is considered taboo, and so, Rin makes a deal with the devil to be reborn as the human boy, Len, in order to be with Miku. However, their happiness together is short-lived, and even that soon ends in tragedy.

After 50 years of being in the position of Hwacheon Clan Leader, Kang-hyuk, widely renowned as 'The Dragon' retires.

When he woke up, Ji Que traveled to a dangerous world where fairy mountains collapsed and temples were abandoned.

Fortunately, he has a supernatural ability, which allows him to save his understanding and use it like banknotes.

The more understanding you accumulate, the more miraculous you can realize.

Comprehend “swimming”, you can swim as fast as a fish in the water, and you can swim up and fly on the ground.

After comprehending “The Analects of Confucius”, the knowledge will be integrated, and the muscle strength will increase exponentially.

After comprehending “The Book of Benevolence”, I have learned one more combat technique of “dividing people into two”!

After comprehending “Yi Xue”, I accidentally mastered a skill of “smashing the head into the body cavity”!

Comprehend “Xiaoyaoyou”, “Mozi”, “Taoist Tibetan”…

Afterwards, Ji Que started holding back his big move, wanting to see what effect it would have if his comprehension reached its limit.

Until one day, he couldn’t bear it any longer, and he kept wishing for a certain stir-fried dish that he had always wanted, so he used all his understanding on “stir-frying and tossing spoons”.

Later, there were rumors in the rivers and lakes that not long after a terrifying plague god came to the world, he was thrown to death by a passing cook…

- Description from novelbuddy

When low-level healer Elias Vale stumbles upon a cursed cocoon in a forgotten ruin, the last thing he expects is to hatch the reborn soul of the Demon Queen Revantra—in the form of a scared little girl.To save her from divine execution, she binds herself to him through an ancient soul pact, fusing their fates. Now, Elias is stuck raising the former destroyer of worlds—who can barely tie her shoes, but occasionally melts furniture when she pouts.What starts as reluctant guardianship soon spirals into something far more dangerous. As Rhea (her new alias) grows stronger, older, and far too attached, Elias must keep her identity hidden from zealous church inquisitors, ambitious heroes, and the remnants of her own loyal followers—some of whom want her dead... again.But the longer he protects her, the deeper the bond grows—and the harder it becomes to tell who’s really taming who.Because the world once burned beneath her wings……and this time, she’s not letting him go.