Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 612 - 611: The Demon Lord Unsealed

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.

Jiang Chaosheng has passed the book. The male protagonist is the reborn prince with excellent luck, and he is the cannon fodder prince who is destined to fail in the palace fight. He is about to be sent to the desolate island in the extreme south, and the fiefs are less than 100 people.

Jiang Chaosheng sunbathed salt, fished… He soon prepared abundant supplies for the rest of his life, but there was an accident when he was eating and waiting to die. He was slow to discover that there were fish thieves in the house!

Jiang Chaosheng set a trap and successfully caught the fish thief on the spot
It was a beautiful merman with eyes like emeralds and hair like sapphire
The poor little merman has a slender waist, glistening scales, and a pitiful posture: I can’t afford the supplies, but I can be your wife and give birth to a little mermaid to repay you
Jiang Chaosheng: Also… not impossible
After a long time, Jiang Chaosheng learned that his wife is actually the villain of the original text, the psychological shadow of the male protagonist Long Aotian, the King of the Sea who is rich in the sea.
The lucky salted fish attack vs the cruel shark emperor
Content tags: childbirth, spirits, ghosts, sweet texts, through books
Search keywords: Protagonists: Jiang Chaosheng, Ji Xuanbing ┃ Supporting roles: ┃ Others:

- Description from novelbuddy

He had crossed into the dark, ruthless Wizard World.Lucien found his system somewhat different from the usual golden finger.System upgrade points? Chip activation?None of these, but rather becoming a role model, transforming into a nurturing breeze:Teaching students knowledge, receiving advanced knowledge in return.Caring for and maintaining students, earning generous rewards.[Your student has mastered the Magic Potion “Kuru's Cough,” congratulations on acquiring the improved formula “Kuru's Cough - Enhanced”!][Your student has mastered witchcraft “Fireball,” congratulations on learning witchcraft “Greater Fireball”!][Your student has successfully crafted the wizard's tool “Pale Mask,” congratulations on acquiring the wizard tool’s manual “Revised Pale Mask”!]Initially, Lucien was resistant.But after experiencing what it was like to teach disciples and outdo them, Lucien felt he had completely transformed into the form of the master system.This thing, isn't it much more useful than something called Cheating Device?

15 years ago the world discovered magic as well as mythical beings (basically beings from various legends) in another dimension. Humankind learned to summon these dangerous mythical beings and use their power to great effect. Seven countries formed contracts with these “mythical beings” and gained their allegiance as a result. The mythical beings will choose their summoners on their 14th birthday and give them a stigma. Schools have been set up to train summoners and magical swordsman (basically bodyguards that give the summoners time to cast their spell) as a result.

15 years later after the finding of magic Kazuki Hayashizaki is chosen as a summoner and given a stigma to indicate that. This is surprising since males aren’t chosen as summoners due to their low amount of mana compared to females. As the first male to be a summoner Kazuki is under a lot of scrutiny by almost everyone.

To complicate matters his sister (who’s a magical swordsman) is against him going into summoner school to train there as a summoner. Because summoners and magical swordsman have a cat mouse thing going on where summoners look down on magical swordsman as inferior so his sister naturally is against him going there. She’ll stop him even if it means going to war.

Kazuki however is determined to thrive in summoner school and has already determined to give it his all. Even if he’s the lowest ranked student (ranked E) and his fellow students intend to demean him he’ll prove himself as the strongest summoner.