I Opened an MC in the Nohara Household

When I woke up, I had become the five-year-old second son of the Nohara family, with an MC System in my head: copy anything, craft items, unlock mods, and even hop into a world made of blocks whenever I wanted. I used an enchanted golden apple to save Conan, who had been shrunk by APTX 4869, helped Kogoro Mouri solve cases with spider silk, saved the little girl at the door with a potion of healing, and casually wiped out the old worm from the Matou family that had lived for hundreds of years. The Holy Grail War? The Sea Monster? The Black Organization? As a five-year-old, I'm doing my best to keep this crossover world from falling apart. (A childhood-era crossover fanfiction, slow-burn daily life + cases + major events)