A lone samurai who travels to perfect his skills. Back when he was much younger, he challenged Jubei and got defeated badly. Since then, he left his village to challenge strong opponents to refine his skills. During his travels, he met Nicotine and became one of his students. When Amakusa appeared back into the world, Haohmaru set out to kill Amakusa as he was a strong opponent. He killed Amakusa with help from Nakoruru, Hanzo, Galford, Charlotte and Ukyo. The same year, he ran into Shizumaru who's village was destroyed by the demon Zankuro. He took care of Shizumaru and helped him find Zankuro. A year later, he was attacked by a demon possessed man during his sleep. Haohmaru easily kills the attacker and tells Nicotine about the attack. Nicotine warns Haohmaru that he must not get involved with the demons. But Haohmaru ignores the warning
and sets out to kill the source of the attack. During his travel, he was attacked by Mizuki but was saved by Amakusa. With help from Nakoruru, he was able to defeat Mizuki and seal off Makai. A year later, he is the target of demons once again. Haohmaru's body is half of what is needed to restore power to the "Dark god" of Makai. Shiki is the other half. In the end, Haohmaru with help from Nakoruru and Rimururu kills Yuga and free's Shiki's soul from Yuga's hands. But shortly after, Yuga revives herself and captures both Haohmaru and Shiki. Haohmaru became Yuga's slave and guarded the entrance to Yuga's cave. He was freed from Yuga's hands when the two Asura's defeated Yuga. He settled into Nicotine's temple and adopted Shiki and Asura's daughter.

Miscellaneous Facts and Notes

He is based off of a famous swordsman called Miyamoto Musashi. But his
character design(mainly his hair) is from the main character of a manga called
"Dororo" written by Tezuka Osamu.

His soul is one of four souls needed to restore power to the Tangil stone. He
is the Koujyukon(the red pearl soul).