The Female Soldier Has Been Told to Infiltrate the Imperial Magic Academy - Chapter 47

In the year 2075, yet another fully immersive VR game New Origin took the world by storm with its unparalleled freedom and virtually limitless play world. This classic yet extraordinary game quickly became a ’second world’ for people, and within just three years, the virtual and real worlds became deeply intertwined. People played New Origin to earn a living, to find freedom, and to escape their hectic everyday lives. Elio started playing for similar reasons. Driven by the eternal flame of an artist, Elio embarked on a journey to experience the true freedom this new endless world had to offer—along with a certain special person. Believing in every creature’s right to freedom, Elio challenged the concepts established in this new world with his companions. Unknowingly, this decision set him on a journey to become the strongest existence in this mysterious otherworld.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

My reunion with her took place in the worst possible way.

Youth, is meant to be used to shed sweat under the sun!