Kyoichi Nanatsuki
Provides story concept support. His credits as manga writer include Samurai Showdown, originally published in Shônen Sunday Comics Special, and Hotaru Road, which was serialized in Young Sunday.
Mangaography

Area D: Inou Ryouiki
Kyoichi Nanatsuki, Kyung-il Yang

Detective Xeno and the Seven Locked Murder Rooms
Kyoichi Nanatsuki, Teppei Sugiyama

Arms
Kyoichi Nanatsuki, Ryouji Minagawa

Kiba no Tabishounin: The Arms Peddler
Kyoichi Nanatsuki, Joong-Ki Park

Void
Kyoichi Nanatsuki, Sung Gyu Lee

Aegis in the Dark
Kyoichi Nanatsuki, Yoshihide Fujiwara

Jesus
Kyoichi Nanatsuki

Pocket Monster BW - Good Partners
Kyoichi Nanatsuki, Chiyo Kenmotsu, Nintendo, Satoshi Tajiri

Samurai Shodown (Yuuki Miyoshi)
Kyoichi Nanatsuki, Yuuki Miyoshi