MTL - Rock Sugar And Pear Stew - Chapter 55 Bite you

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

Following the death of the emperor, the Astanian Empire plunged into chaos. His two sons both aiming for the throne caused a civil war that divided the empire.In the midst of this conflict, Alaric was forced into conscription. He later joined the crown prince’s army as a company commander.He led his 100-man army into battle, fiercely fighting with the hope of a better future. Unfortunately, he was just too weak to cause a ripple on the battlefield.A single arrow to the head shattered his hopes and he died without even a proper burial.Just when he thought that everything was over, he found himself back to his younger self with his memories intact.Armed with his knowledge of the future and a system that awakened his dormant powers, Alaric began his journey to overcome his fated demise.

Akira, was born in the slum and wishes to get out but the only way he could was to risk his life in these ruins as a hunter.

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates