Used

<<Tokyo Regents>> A Book Celebrating Dog Pea's Birthday / Black Cat (Kuiichi x Insei Sect) / Kuroneko no Yakata

Used

<<Tokyo Regents>> It is fun to have both a dog and a cat of Kokorinu every day 2 / Kuroneko (Kuiichi x Insei Sect) / Kuroneko no Yakata

Used

<<Tokyo Regents>> Keeping Koko Dog and Cat Makes Everyday Life Fun / Kuroneko (Kuiichi x Insei Sect) / Kuroneko no Yakata