Kaneki Ken is often considered one of the best-written characters in anime and manga due to his deep complexity and evolution throughout "Tokyo Ghoul." Initially a timid college student, his life drastically changes after becoming a half-ghoul, forcing him to navigate the challenges of his new identity. His internal struggle between his human emotions and ghoul instincts highlights themes of identity, morality, and acceptance.

Kaneki's vulnerability and sensitivity make him relatable, as he questions the nature of humanity in a world filled with conflict. His relationships with characters like Touka and Tsukiyama further enrich his character development. Overall, Kaneki embodies a profound exploration of the human condition, making him a memorable and impactful figure in the series.