MTL - Night Ranger - v4 Chapter 170 Immortal spring

One day, I was summoned to this world.

Quinn Winter is a young man from another world. One day, he is suddenly chosen to become the new Demon King. But the Demon Kingdom is in big trouble – it's losing a terrible war against the human kingdom called Gran'le.To help his people, Quinn comes up with a risky plan. He will sneak into Gran'le and learn their secrets. But things don’t go as planned. A powerful noble sponsors him, and he ends up joining Heavenward Academy, the top school for training future heroes.At the Academy, there's a big challenge called the Selection. The best students become Paladins – magic knights who fight demons. Quinn doesn’t want to become a Paladin. He is a demon king! But now, he’s stuck in the Selection… and if he wins, he’ll become the very thing he’s supposed to destroy.He started the day badly. Now, things are getting even worse.

She is the wife completely ignored by him, yet also the woman he most cherishes. Ultimately, she forces her husband to divorce her by taking on the identity of a lover!She steals vital information and, carrying this man's premium seed, successfully makes her getaway!Six years later, father and son have their first online confrontation. The little bean successfully infiltrates the man's system and sighs at her, “Mom, this person is so dumb. Is he really my dad?”Mu Yiliang pats her son's head and says reassuringly, “He was so terribly fooled by me back then, which shows his IQ is very low. Luckily, you inherited mine!”Unbeknownst to them, the man on the other end of the computer has already listened to the conversation between mother and son. He sneers coldly, “Very low IQ? Mu Yiliang, let's see where you're going to run this time!”

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates