Comic about hamsters. - Title: Hamster Research Report ①②③ and Hamster Club - Author: Sigure Osawa, etc. The Yuko in the photo is my sister, and she was close to Mr. Osawa. She passed away at a young age, and I kept these as her belongings, but I thought it would be better for someone who loves hamsters to enjoy them, so I put them up for sale. Thank you for looking.