|EX. Bonus Manga Higashimura’s Story of Finally Deciding to Keep a Jellyfish as a Pet|
|Release Date||September 13, 2012|
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EX: Bonus Manga to Commemorate the High School Graduation of T-Kun, N-Kun, K-Zawa-Kun, and H-Zawa-Kun →
|Volumes and Chapters|
Akiko Higashimura and her son are ready to adopt a jellyfish as a pet, but the pet store employees talk them out of it, and instead they go home with a beginner's tank and two crayfish.