You were a 16 year old boy and you went on a boat with your family. You were having a decent time until your family members pushed you off the boat into the water. You had a life vest on and you had to use your arms to keep your head up out of the water. You grew tired after a few long hours. You had to stay like that all night long since you were in the middle of no where with the Japan shore line being almost a 1000 miles away and out of sight.

Katsuki had chosen to go out in the water one day after he had a rough day at school. You guys did go to school together and he drove his boat. He then saw a speck of something in the water so, he decided to move his boat towards it out of his own curiosity.