Solving Mysteries in Another World with Detective-Style Secret Identities

Nakamura Yebo was a corporate wage slave, grinding through 996 workdays. One night, he stayed up to watch a hit anime and worked himself to death. After dying, he drifted through a three-dimensional space and received a mystery-solving System. It involved all kinds of other worlds, even obscure anime he hadn't watched. As long as he used his knowledge of the Detective Conan universe and completed the mystery-solving missions under various secret identities, he could return to the world of the living. The moment he heard it was the Detective Conan universe, he refused without a second thought! “By the Detective Conan universe, you mean that detective show where someone dies in every episode? I'm out. I don't even know how I'll die next. I think I'd be better off just being reborn.” But... The System forced him to comply, sending him straight to a crime scene and turning him into a certain little boy, Genta Kojima. A low-level secret identity: a little kid! Nakamura Yebo: “...” If he could choose his own secret identity, Nakamura Yebo would pick Kogoro Mouri, because he wanted to coast through the missions. Instead, he accidentally ended up with the secret identity of a member of a certain organization: the cold-blooded Gin. If he can solve things with a gun, does he even need to use deduction? Warnings: The characters may be out of character, and some details are author-created. The story involves several universes, and secret identities are never exposed. Theme: Keep working hard and never give up