Several years have passed since I retired. My wife has passed away, and I require nursing care. I have no social interactions in the neighborhood and spend my days in solitude. One day, a new caregiver showed up at my place, and to my surprise, it was my granddaughter, Mikoto. She is training to become a caregiver and is here as part of her exam. Moreover... "I'm going to live here and take care of you a whole lot!" Even though she's aiming to become a caregiver, living alone with my teenage granddaughter? Can this really go well...? Still, as I watched Mikoto's beaming smile, I felt as if the pain in my back was mysteriously easing.