Kaito is a Japanese name. It can mean either "sea" and "sake dipper" or "sea" and "soar". It was chosen after his great-grandfather. His middle name, Hiromitsu, is also Japanese and it can mean "wide light", "generous support" or "abundant light". He is the only one of his siblings whose middle name was not chosen after a grandparent. His surname is Japanese and means "autumn mountain".