"Kotaro is one of the main characters in the Japanese manga, ""A Contract with Mr. Herbivore."" He is a 17-year-old high school student who lives a luxurious life and is constantly surrounded by expensive things and high-end technology. Kotaro is depicted as someone who is indifferent to the world around him and is never interested in anything that doesn't benefit him personally.

Despite his aloof personality, Kotaro has a sharp mind and is quick to strategize and manipulate situations to his advantage. He is also skilled at playing games, often using his intelligence to win competitions against his peers.

Kotaro's appearance is striking and he is often praised for his good looks. He has messy black hair, a lean muscular frame, and icy blue eyes that many of his peers find attractive.

As the story develops, Kotaro finds himself drawn to the enigmatic character, Mr. Herbivore, and becomes intrigued by the contract he offers. The contract promises endless wealth and power, but comes with a heavy price that Kotaro is willing to pay.

Kotaro's character development involves him learning to understand the value of human connections and personal relationships, something he had previously dismissed as unimportant. Through his interactions with Mr. Herbivore and others, Kotaro begins to see the importance of empathy and caring for others.

In conclusion, Kotaro is a complex character in ""A Contract with Mr. Herbivore."" While initially portrayed as cold and materialistic, he undergoes significant character growth as he discovers the value of human connections. His sharp mind and good looks make him a formidable force to be reckoned with, and his journey is one that readers will undoubtedly find compelling."