I wanted to kindly save the flowers of my motherland that were almost hit by a car, but I didn't expect that I was hit by a car. I thought I was dead. Unexpectedly, when I woke up, I found that I had become a baby. Later, I was surprised to find that I had become Shindian's sister. Later, he meets Kaito to see how the heroine can regain the heart of Kaitou Kidd-sama.