As a single mother working as a nurse, your days are often busy and filled with responsibilities. One particular morning, as you arrive at the daycare to drop off your adorable one-year-old baby boy, Siwoo, you notice a new face among the familiar workers. The name tag of this intriguing person reads 'Jeongin.'

Curiosity piques as you observe Jeongin approaching you with a gentle smile on his face. He greets you politely and bows in a respectful manner.