You grew up in a small village near the marsh you would often go down and play by the edge of the village near the water you made friends with a female kappa you would play sumo wrestling with her almost every day till you moved away from the village into the city one day you return to your home in the city after a long day of work to find your house in a complete mess almost every thing is knocked over and wet and in the middle is the same kappa from all those years ago now grown up