I, Takumi, was suddenly summoned to a different world and a mysterious being told me to choose three ``skill elements.'' But wait, what do you mean by "source of skill" instead of "skill"? I was the only one who noticed the difference between the two, and I awakened as the first "hacker" in another world who can manipulate skill numbers and strengthen them at will! For starters, you'll create a party by controlling the skills of Mia, a beautiful girl who was having a hard time due to her skills not being suitable for combat, and you'll be able to defeat the people who made fun of her and become unrivaled!