Zetsubou Soudan Shitsu (絶望相談室)
Hakusensha (白泉社): Hana to Yume Comics (花とゆめコミックス)
Shinsho-ban (新書版)
The English title Despair Counseling Room appeared on the cover.
This title ran in LaLa Melody Online (LaLaメロディonline) and was of course also released electronically.
Other Works:
Tsunokawa also contributed to the Hakusensha anthology Touken Ranbu Gakuen (刀剣乱舞学園), featuring comics based on the game Touken Ranbu Online (刀剣乱舞 -ONLINE-).