Hideyoshi Nagachika, often called 'Hide', is a key supporting character in the anime and manga series Tokyo Ghoul. He is the childhood best friend of protagonist Ken Kaneki and attends Kamii University alongside him. Known for his cheerful personality and unwavering loyalty, Hideyoshi is exceptionally perceptive and cares deeply for Kaneki, supporting him even after Kaneki's transformation into a ghoul. His role is pivotal, as he bridges the gap between humans and ghouls, showing empathy and resourcefulness throughout the series.