TV-Series
Description
Kai Fuzuki is the male representative for the month of July and a member of the idol unit Procellarum under Tsukino Talent Production. His surname, Fuzuki, is an older name for the seventh month of the lunar calendar, while his given name, Kai, translates to sea. Born on July 15, his astrological sign is Cancer, with type O blood. At 186 centimeters tall, he is the oldest and tallest member of both Procellarum and the unit Six Gravity. Physically, Kai has short, light brown hair styled in a windswept look and blue eyes.

Kai is widely known for his big-hearted, lively, and brotherly personality, which makes him popular and respected among other male characters. As the eldest son among six siblings, he has naturally developed a tendency to act like a big brother to everyone, often patting people on the head in an affectionate manner. He is a welcoming, accepting, and very reliable individual, often described as a jack of all trades. While his nurturing nature is a strength, it can sometimes lead him to pamper others too much, particularly his unit leader. He has a habit of always carrying cookies or candy in his pockets. Kai enjoys physical activities, fishing, explorations, and work, and he possesses a sense of adventure.

Kai comes from a family of eight, being the eldest of six children. Driven by a desire to be self-reliant, he moved out on his own after graduating high school with the goal of opening a general business. At one point, he encountered Rui, who had run away from home, and Yamato in the rain, taking them in as his own. His path to becoming an idol began indirectly. While helping previously scouted members move into the Tsukino dorms, he was recruited on the spot. Noticing an opportunity, he showed the company a picture of Rui making an amusing expression, which led to Rui being scouted as well.

In the story, Kai serves as a stabilizing and nurturing elder figure within Procellarum. He is deeply connected to his unit partner, Shun Shimotsuki. Although he feels secure in his stable idol group, his adventurous side sometimes surfaces, leaving him feeling that something is missing when he has not been on any recent adventures. His memory and past play a significant role, such as during a dream filled with memories of the Tanabata festival that causes him to chase after a mysterious sight while filming at a haunted house. He also once encountered a mysterious cat, which led to concern from his fellow members, especially in the absence of his partner, Shun. A notable ability or trait of Kai is his resourcefulness, reliability, and skill in a wide variety of practical tasks, fitting his description as a jack of all trades.