Mutsuki and Uzuki are a father and son odd couple who live in the lap of luxury. Or at least they did until Uzuki’s bad management bankrupted his company and got himself in all sorts of trouble. Desperate to escape the attention of vicious loan sharks, Uzuki drinks a special tonic to turn back the clock, but it works a little too well, turning the middle-aged magnate into a three-year-old! Now Mutsuki must fend for himself and his self-centered, meat-loving dad in a toddler’s body. Can Mutsuki handle the transition from spoiled teenager to father, especially with someone as annoyingly punchable as Uzuki?

Source: Mangamo