One of the most intriguing and mysterious anime series featuring a blue-haired girl is "The Perfect Insider." The story follows the brilliant and reclusive genius, Shiki Magata, who is accused of murdering her parents and locking herself in a research facility. The Perfect Insider delves deep into the complexities of the human mind and the blurred line between genius and madness. "The Perfect Insider"
Hyouka is a slice-of-life mystery anime that revolves around a group of high school students. Among them is the curious and quick-witted Chitanda Eru, who sports beautiful blue hair. The series follows the students as they unravel various mysteries in their school and everyday life, with Chitanda leading the way with her sharp intuition and deductive skills. "Hyouka"
Gosick is a gothic mystery anime set in a fictional European country in the early 20th century. The series centers around Victorique de Blois, a young girl with striking blue hair and an extraordinary ability to solve complex puzzles and crimes. Along with her partner, Kazuya Kujo, they uncover the truth behind various mysteries and conspiracies. "Gosick"
Featuring a classic horror and mystery theme, Another follows the story of a cursed class in a school where students mysteriously die every year. Among the students is Mei Misaki, a quiet and enigmatic girl with long blue hair. Mei becomes the center of suspicion as she works with her classmates to uncover the truth behind the curse and stop the killings. "Another"
A group of talented students are trapped in a high school and forced to participate in a deadly game of murder and mystery in Danganronpa: The Animation. One of the students is the stoic and analytical Kirigiri Kyouko, with her signature blue hair. As the students try to survive and figure out the mastermind behind the game, Kirigiri's detective skills become crucial in solving the murders. "Danganronpa: The Animation"
Considered a modern classic in the mystery genre, Death Note follows the story of Light Yagami, a high school student who discovers a supernatural notebook that can kill anyone whose name is written in it. Along with the enigmatic detective, L, Light engages in a deadly cat-and-mouse game to outsmart each other. Light's signature blue hair adds to his iconic and mysterious persona. "Death Note"
In a futuristic world where a person's mental state can be quantified and monitored, Psycho-Pass follows Akane Tsunemori, a rookie inspector tasked with solving crimes and keeping the peace. Her partner is the enigmatic and aloof Shinya Kogami, who has a striking blue streak in his hair. Together, they unravel the dark secrets of their society and the mysterious organization known as the Sybil System. "Psycho-Pass"
Satoru Fujinuma is an aspiring manga artist who has the ability to go back in time and prevent tragedies from happening. In Erased, Satoru finds himself going back 18 years to his childhood to solve the mystery of his mother's murder and prevent it from happening. Along the way, he befriends a blue-haired girl named Kayo, who becomes a crucial piece in the puzzle of his mother's death. "Erased"
Featuring a complex and dark storyline, Monster follows the journey of Dr. Kenzo Tenma, a brilliant surgeon who saves the life of a young boy with a gunshot wound. However, the boy turns out to be a dangerous serial killer, and Tenma becomes embroiled in a twisted game of cat and mouse to find him. Amidst the chaos and mystery is the blue-haired and enigmatic Nina Fortner, who holds secrets that could unravel the truth behind the killings. "Monster"
In this mind-bending and surreal anime, Serial Experiments Lain follows the story of Lain Iwakura, a shy and introverted girl who becomes obsessed with the Wired, a virtual reality network. As she delves deeper into the mysteries of the Wired, she discovers shocking truths about her identity and the world around her. With her signature blue hair, Lain's journey is a thought-provoking and mysterious one that will leave viewers questioning reality and existence. "Serial Experiments Lain"