(C73) [Cool Brain (Kitani Sai)] ANGEL PAIN Extra 5 -NATSUTSUKA-

(C67) [Cool Brain (Kitani Sai)] Angel Pain 14 (Gundam SEED Destiny)

(CR27) [Cool Brain (Kitani Sai)] ANGEL PAIN 2-The Angel of Back Scuttle- (Turn A Gundam) [English]

(C57) [Cool Brain (Kitani Sai)] Angel Pain (Seihou Tenshi Angel Links) [English] [Doujinshi-Section]

[Cool Brain (Kitani Sai)] Onesuka Junbigou

(C72) [Cool Brain (Kitani Sai)] ANGEL PAIN Extra 4 -Ojou-sama Scatolog- (Original) [English]

[COOL BRAIN (Kitani Sai)] ANGEL PAIN Extra 7 -Ryoujoku Scatology- [Digital]

(C70) [Cool Brain (Kitani Sai)] Angel Pain 16: Chain Princess (Final Fantasy XII) [English]

(C72) [Cool Brain (Kitani Sai)] ANGEL PAIN Extra 4 -Ojou-sama Scatology-

(C78) [Cool Brain (Kitani Sai)] ANGEL PAIN Extra 10 ~ Scaplus ~ (Love Plus)