Able to level up the abilities of others while owning a bar

Dimensional rifts have appeared on earth in the year 2034 bringing monsters and destroying the earth but as the rifts brought ruin they also brought humanity a gift. A system people gain at the age of twenty leaving those who don’t awaken the system to become pry to both monsters and hunters.
Join our MC who gains the ability to level up others abilities in return for a quarter of their stats