I can upgrade female zombies

A tremendous change is coming, and zombies are undergoing a global mutation. In this world where order has collapsed, Lu Cheng must follow his true nature, step by step, to become the strongest. This time, he wants to do as he pleases!

However, as he observes the increasing number of alluring female zombies around him, Lu Cheng falls into contemplation:

"It seems like there's a bit of an issue with the direction of doing as I please."