Start Practicing by Licking Your Bag

I accidentally traveled to a different world where there were many murders, but luckily the bag-licking system was activated. The fresher the "box" is, the more supplies you can lick. Including the box owner's skills, combat skills, magical powers, and even "experience points" and so on! The materials put into the backpack can be absorbed with one click if the conditions are met. You can directly become a special soldier by absorbing experience points, you can practice by absorbing innate energy, you can directly master martial arts and combat skills by absorbing them...