Drake, a brilliant physicist, meets a tragic end due to an experiment gone wrong. However, instead of the beautiful Angel of Death, what Drake meets is an eccentric old man from a mysterious organisation who reincarnates him into a vast world of magic and martial arts.

Embark on an epic saga with Drake as he journeys through a diverse world teeming with various races ranging from mighty dragons to enchanting mermaids. Conflicting personalities and goals intertwine with each new encounter, unravelling intricate plots which leads Drake into confronting powerful foes, clandestine organisations, and the echoes of his own morals from Earth, causing him to evolve as an individual and a cultivator.

Maybe he'll emerge as the hero that the world needs, or he just might become the demon that ends it.
...
Expect: occasional swearing, some graphic/torture scenes

This web novel is also available on Royal Road.