The Fallen Hero Reincarnates as the Demon King's Son - Chapter 2 - 1 - Demon System

This is a work of fiction. Names, characters, places and incidents either are products of the author’s imagination or are used fictitiously. Any resemblance to actual events or locales or persons, living or dead, is entirely coincidental.Please note that this work of fiction is not safe for work (NSFW). It contains words, scenes, and phrases not suitable for audiences below 18. Be aware.—All the characters here are 18 and above—SynopsisOkumura Kouhei is in love with Saonji Hina, but she’s as cold as ice and doesn’t let anyone get close—she's like a flower that’s impossible to reach. However, everything changes when Kouhei uncovers a secret about Hina that turns his world upside down.To make matters even more complicated, members of the student council decide to get involved, adding to the chaos swirling around him. And let’s not forget about his neighbor next door, who seems to have her own agenda.What will happen to Kouhei now that he’s stumbled upon something he wasn’t meant to discover as a mere human?

Transmigrating to the disciples of the Demon Sect, and relying on the skill modifier to become a giant of the Demon Dao.

[Detected the technique “Blood Nerve”, relying on devouring blood to practice]

[Side effects: easily affected by the spirit contained in the blood, becoming bloodthirsty, bloodthirsty, mad, and even brain dead]

[Please wait a moment, the system is being modified…]

[Ding! The modification is complete, and the side effects are cancelled]

- Description from novelbuddy

Chang An is a sub-beast who, despite having the talent for the sword, did not have the constitution to support it. And his savior, Hua Yi, is a beastman on the run for his life.

This is a story about how two once innocent children had to grow up in such a cruel beastman world.

- Description from Novelupdates