My Invincible System Gives Me a Golden Finger One Rank Higher

After transmigrating to another world and binding himself to a System, nothing changed. He even had to work for it. Until one day...

"Host, a low-level System has been detected. Would you like to copy all its abilities and enhance them?"

"Yes."

"Copying... You now possess all its abilities. You can absorb or control the other System. Please make your choice."

Holy cow, what a find!

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.