"Haruhito Moeka is one of the main characters of the Japanese manga series ""Opening Bonus of 100 Million Lives"". He is a 17-year-old high school student who is known for his cool and collected demeanor, and his unparalleled skills in martial arts.

Haruhito Moeka's family owns a dojo that specializes in the martial art of Kendo, where he has been training since he was a young boy. He is a prodigy in Kendo, having won numerous tournaments and championships at a young age. He takes pride in his skills and often demonstrates his prowess in fights.

Despite his skills, Haruhito Moeka is a quiet and introverted individual. He rarely speaks unless necessary and prefers to keep to himself. He is often seen reading books or training at the dojo, and has few friends.

However, Haruhito Moeka's life takes a dramatic turn when he meets the protagonist, Yuta Gamon. Yuta introduces him to the world of ""Life Trading"", a dangerous game where players can trade their life force for money and power. Haruhito Moeka becomes intrigued by the game and decides to join Yuta and his group of friends on their quest to become the top players in the game.

In ""Life Trading"", Haruhito Moeka becomes known as the ""Kendo Master"". He utilizes his skills in martial arts to defeat opponents and rise up the ranks. However, he soon discovers the darker side of the game and the consequences of trading one's life force.

In the later part of the series, Haruhito Moeka develops an unlikely friendship with Yui Shishido, a teenage girl who is also a skilled fighter. Together, they form a powerful duo and become a force to be reckoned with in the game.

Overall, Haruhito Moeka is an intriguing and complex character whose quiet demeanor belies a fierce passion for martial arts and a desire for something more in his life. His journey in ""Opening Bonus of 100 Million Lives"" is one of self-discovery and the dangers of obsession."