Kunai Den

The Legend of Kunai (クナイ伝) is a Japanese shōnen manga by Tabasa Iori. The manga is ran in Shōnen Sunday from 2007's volume 46 through 2008 volume 32.

Plot
The story follows Kunai Komori, a junior high school student who is also a ninja. Upon his father's retirement and his inheritance of his father's sword, he is charged with hunting down other blood-sucking vampire ninja.

Characters

 * Kunai Komori (幸守クナイ)
 * A young boy who inherits his father's sword, Jakoto, on his fourteenth birthday. He comes from a family of vampiric ninja. When he drinks the blood of others, he transforms into a taller version of himself. He has a crush on Itzuna.


 * Izuna Ninomiya (二ノ宮いづな)
 * Kunai's classmate and house guest. She is also descended from a long line of vampire hunters.


 * Sagiri Komori (幸守狭霧)
 * Kunai's father, who has retired and let his son inherit the family's responsibilities.