MTL - Travel to a Primitive World to Build Infrastructure - Chapter 21

Three years ago, in the land of Reinbulk, a Legendary Hero was summoned in the Kindom of Leezalion and he succeeded in repelling the Demon King. Now, five students are summoned back into Reinbulk by the Kingdom of Luxeria to fight against the Demon King and the demon army. Unlike the other heroes, Yashiro Yuu has no magical affinity and the Luxeria Kingdom has no intention on acknowledging his existence or returning him to his world.

Title: the Shackles of VoidGenre: Dark Fantasy, Sci-Fi, Transmigration, Psychological, ActionA Soul Between Two WorldsHeze, a brilliant cognitive economist from the futuristic floating city of Aethelburg, is obsessed with an anomaly called the Null Memor —a perfect void where data ceases to exist. In a reckless experiment, he merges his consciousness with this abyss, only to awaken in the body of Nihil Aethernis Nocturne, the cursed heir of a ruthless noble house in Eulogia, a world where magic and cruelty intertwine.Nihil was born with the Shackles of Nihility, a curse that turns him into an “existential black hole”—severing all emotional and magical connections, slowly erasing him from reality. But when Heze’s soul binds with Nihil’s dying vessel, something impossible happens: the Void answers his call.

A Pill Emperor of his generation was set up by a traitor.

Since then, the world lost a Qingyun Zi and gained an invincible silkpants.

Once again, walking the Great Dao of Alchemy.

How can I defy the heavens . . . with the medicine in my hands!

- Description from Novelupdates

His fiancée, whom he had never met, had just broken off their engagement. He's then betrayed by his girlfriend and schemed against by her lover.His mother's legacy awakens him. No longer content with mediocrity, he transforms into a dragon overnight.