Invincible System, My Golden Finger Is One Level Higher Than Yours

Traveling through a different world, nothing has changed after being bound to the system, and I even have to work for it. Until one day... "Host, discover the low-level system, copy its full capabilities and strengthen it?" "Yes" "Copying... You already have all its abilities. You can absorb or control the opponent's system. Please choose." Oh my god, I found a treasure! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.