MTL - The Manga of Ten Thousand Realms - Chapter 315

SSR-ranked killer Mu Hui died in an explosion, only waking up to find herself transmigrated into the body of a vicious female supporting character in a book.

One day, Zhang Fan, a poor medical student, receives a medical system from the future. This turns him into a new shining star in the medical field. Along the way, he must face medical corruption, competition, and infighting from other doctors, and even find time for a love life as he strives for the top of the medical field!

When a person dies, they either die light as a feather (aka unimportant) or heavy as Mt. Tai (aka very important).

After transmigrating to a world similar to Earth, Jiang Qiao was approached by a former goddess—Ocean Blue. As Bluestar is also on the verge of collapse from invaders of other worlds, Jiang Qiao must find a way to save this one. With the ability to create a virtual game world, he creates the world of Sacred Souls. In order for this new world to grow, it has to devour other worlds. Thus, the greediest, most cunning, and horrible beings came into existence—Players.