Conan's Unscientific Detective

God played a joke on Fujino. When he woke up, he traveled to the world of Detective Conan and became a high school detective who inherited a four-story building after his parents died and relied on commissions to make a living.
Just when he was at a loss, a career system was suddenly bound.
From then on, he began his journey of becoming stronger by spending money.
…………
May I ask, as a detective, why do you have so many skills?
Fujino: What I mean is, isn't it normal for a professional detective to learn professional skills?