about how i with only magical power of 006 became the strongest hunter with just my skill level and proved the greatness of the slingshot

a brief description of the manhwa about how i, with only magical power of 0.06, became the strongest hunter with just my skill level and proved the greatness of the slingshot: “there’s not a monster a slingshot can’t defeat” yuu’s father left him with a slingshot after saying that. with his proficiency with the slingshot, kimura yuu became “an f-rank with a 100% accuracy”, and has become active in fighting low-grade monsters. however, with his mana at “0.06” and the lowest rank, the teammates he raids with often ridicules him. one day, a command window which writes “target point reached, exclusive store has been unlocked” “skill: flint finger has been given as a reward”. with his skills levelling up, he started defeating high-grade monsters one-by-one, even with his 0.06 mana… will yuu become the strongest hunter with the slingshot his father left him