The Kuramoto family is a three-generation family consisting of Eri, his son and his wife, and grandson Kameji. From a young age, Kameji was raised by his grandmother, Eri, on behalf of his busy son and his wife, who both work. One day, she decided to go on a hot spring trip with everyone to celebrate Eri's 60th birthday. is what happened. The two who arrived at the hot spring...
