Education-wise, Otsuka went to Tokai University, Tokyo, Japan, for a bachelor degree in Electrical/ Communication Engineering.

In his private life, Otsuka found his true love and honestly got married, in Minato City, Tokyo Metropolitan, to Kazuko Otsuka, who has always been by his side till the very last day of his life.

In his early 30s, Kazuki Otsuka traveled to Thailand, without knowing that he would spend the rest of his lives in this beautiful country.

In 1987, Otsuka started his career in Thailand at Dynastic Thailand Co., Ltd./Sumitomo-Exce Co., Ltd., as a developer of Personal Watercraft (PWC) with Tohatsu engines.

In 1992, he took a new start with SEAT Boat Co., Ltd., in the capacity of Project Manager for a jetboat project with Suzuki Jetdrive engine PJ650, in association with International Marine Co., Ltd.

Kazuki Otsuka strongly grew up in the organization of SEAT Boat and its afliates till he made a strong decision to pursue his own course in 2004. The last masterpiece he did for SEAT was the General Arrangement Design of a 25.5m motor yacht, “MY Shangri-La”.

In August 2004, having left SEAT Boat, Otsuka bravely took the biggest challenge of his life by setting

up “Hull Co., Ltd.”. He proudly described his intention to name his company “Hull” as follows;

“Hull is an old English word, meaning body of ship/boat. I named the company "HULL" because the company is like

a ship and the staff are like
the “Crews” for the company’s operations with good teamwork towards the right direction. A boat can never be run only by
the captain. All crews onboard share hard times, happiness, and benets together.”

At Hull, two of the greatest achievements and pride of Otsuka are the full rets of MY Long