I Asked You to Deliver Packages, Not Take the Whole Country by Storm!

Yu Shan was dumbfounded when he got the Mission Must Be Accomplished Delivery System. He'd only delivered a package to an elementary school music teacher who taught piano, yet he'd gained the ability to copy skills? How could things get any crazier? Delivering a package to a swimmer earned him [Level One Swimming Skills in Every Category]. Delivering a package to a hotel chef earned him [Level One Cooking Skills of Every Kind]. Delivering a package to a market fishmonger earned him [Advanced Singing Skills for the Eighteen-Touch Song]. Yu Shan: ...