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Official Site: Kodansha

Manji is the protagonist of the Japan manga series Blade of the Immortal. In the story, he's known infamously both as the "Hundred Man Killer," for the number of men he's killed by the beginning of the series, and "Mister Twelve Blades" for the number of weapons he carries. He is most easily identified by the manji symbol he wears from which he derives his name and the scars across his face, and as the title of the manga implies, he's been given immortality by the means of the kessen-chu, which prevent him (for the most part) from dying.

The fallen samurai Manji served the Hatamoto Horii Shigenobu, a local daimyo, unknowingly enforcing his brutal rule on the local populace until he found out his lord was corrupt and killed him. From that moment on he was considered an outlaw and hunted down by the same daimyo clan, eventually gaining the nickname "Hundred Man Murderer". He fled to his sister, to Machi's house forgetting that she had married an officer of the law, Saitō Tatsumasa. While evading pursuers Manji encountered Saitō Tatsumasa and the two faced off preparing to do battle when suddenly Machi appeared on the scene. Her arrival distracted Manji, who finally realised who his opponent was, giving Saitō an opening to attack. Saitō seized the opportunity and lunged forward attacking Manji. In desperation Manji defended himself, but was unable to fully avoid Saitō's attack. The confrontation resulted in Manji's loss of an eye, Machi's mental breakdown and the death of Saitō Tatsumasa, who became the 100th man to be killed by Manji. From then on Manji dedicated himself to taking care of his sister. The exact events between then and the beginning of the series are not known, but at some point during this time, he encountered Yaobikuni (her name literally means "nun of eight hundred years"), a mysterious nun, who offered him the kessen-chu, or sacred bloodworms, which would provide him with immortality. The best indication of Manji's age is that he is at least ten years older than Rin (which would make him twenty-six). However, as it is known that the Kessen-chu freezes the aging process and that Manji has had the worms for at least a year, he may technically be older than that.

Rin

Rin - being the pivotal character of Blade of the Immortal, in which every other character has some kind of connection or relationship to - has a well-developed companionship with Manji. During the first two story-arcs she is nearly inseparable from Manji, employing him as a bodyguard. At first the relationship can be described as that of sister-brother or possibly father-daughter (as evidenced in Dreamsong where she makes a decision based on said family values in terms of how to deal with Manji), as well as a strong mentor feel as he starts training her. Manji treats her as a child, often teasing Rin about her immaturity in some situations, while over-thinking in others. However in the 14th volume, Last Blood, Rin kisses Manji whilst he is asleep, thinking about how she would like to cuddle him as a 'reward'. This suggests that Samura has plans for the characters that transcends that of sister-brother.

Manji has not been a contender in any CBUB matches.