Biochemical Madman from Another World

The continent is in turmoil and storms are rising; Heroes vie for supremacy and kingdoms fall; Aliens invade and demons descend; A hero appears to slay demons; With beauty in my arms, the world will be conquered... Before traveling through time, Chen Yu thought his story in another world should be like this. However, after traveling through time, Chen Yu found that the first thing he did was to slice himself into pieces?