Leon  

, レオン

Leon, the child of theo and father to nana, had always been interested in pursuing a career as a doctor since childhood. unlike his father, who wanted to become a puppeteer, leon was determined to follow his passion for medicine. despite their differences, leon's desire to be a doctor became even stronger after nana fell ill. although she recovered, the experience left a lasting impression on him and fueled his determination to help other children in need. in one of their last arguments, leon confronted theo about his aspirations and expressed his wish to become a doctor and assist those who had gone through what nana experienced. these words angered theo, leading to an argument that ultimately resulted in leon leaving the family. however, after some time apart, leon pursued his dream of becoming a doctor in milan under professor casella's guidance. years later, leon reunited with his father and daughter, having successfully established himself as a doctor who treated impoverished children in the city. the reconciliation between father and son was bittersweet but ultimately led to a newfound understanding and appreciation for each other's choices.