Kouichi Aizawa

Age: 14 years

Birthday: 7/31

Height: 168 cm

Weight: 54 kg

Shoe size: 26 cm

Likes: Rabbit meat, reading (modern literature)

Dislikes: Rhetorical flourishes, historians

Specialty: Using the five elements, Japanese dancing

Fighting Style: Fukushima shinobi-style taught in the Banten area

Rokujo's 14-year-old classmate who studies nindō under Kumohira. Though he normally has an energetic attitude when around others, he is serious and relentless when it comes to his ninja duties, and is apparently fascinated with death.

He was born on July 31.