The little known youngster was one of the young professionals who fought out of the Taisei Boxing Gym.
He made his professional debut back in December 2013, when he fought to a draw with Mike Kinaadman in the Philippines, where he had to fight as he was too young to get a Japanese boxing license. On the same show we also saw the debut of the much touted Riku Kano, who actually lost to Benjie Bartolome.
Hattori had began boxing when in elementary school and quickly began to impress despite his young age. As a youngster he went on to win the under-15 national tournament and appeared to have a flourishing professional career ahead of him. Sadly however just months after his debut his hopes and dreams were dashed and potential curtailed.
In March 2014 the talented youngster was diagnosed with leukemia. From then on he was involved in a tougher fight than his ones in the ring. He put up a brave effort but couldn't overcome the illness and unfortunately passed away this morning.
This sad news was broken by Taisei Marumoto on his gym blog for Taisei boxing gym. We want to send all of our wishes to Kaito's family and friends as well as those at the Taisei gym who will almost certainly have been hit hard by this loss of a member of their boxing family.
(Image courtesy of Taisei Marumoto's blog)