| Extra. Bonus Manga "Average Age 31-Year-Old Christmas" | |
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| Titles | |
| Information | |
| Release Date | March 12, 2010 |
| Chapter | EX |
| Volume | 4 |
| ISBN | ISBN 978-4-06-340790-7 |
| Previous ← EX. Bonus Manga Jellyfish, Me, and Barcelona Pt 3 |
Next EX: Kuragehime Afterword Bonus Corner → |
| Volumes and Chapters | |
Summary[]
Manga artist and writer, Akiko Higashimura adds a bonus manga about her workplace and Christmas time.