After the System Leaves, It Becomes Invincible.

Han Feng traveled to a parallel space where spiritual energy had been revived for a hundred years. The original owner was assassinated just after being bound to the system. Han Feng, who had just crossed over, was abandoned by the system. Fortunately, the system left a panel for him. With the help of this panel, Han Feng fights strange beasts and destroys gods and demons. There is no female protagonist in this book, or a single female protagonist. The first book, try to finish it. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.