Hideki Ryuzaki

Despite his untidy and lethargic demeanor, L possesses exceptional deductive skills and profound insight. His analytical approach is marked by a tendency to question all presented information thoroughly. He exhibits several idiosyncrasies, such as a preference for crouching over conventional sitting, a diet exclusively comprising sweet items like confections and fruits, and an unusually delicate handling of objects. L has a notable background, having spent five years in England during which he secured the title of England Junior Cup champion in tennis.

Regarding his dietary habits, L posits that despite his consumption of solely sweet foods, his body weight remains low due to the brain's high caloric requirements, which is the most energy-consuming organ. Additionally, he claims that his cognitive abilities would decrease by 40% if he were to adopt a standard sitting posture.