The "Oshiri Tantei" series, with a total of 8 volumes, is captivating due to its unique characters and stories. - Series Name: Oshiri Tantei - Volumes: 7 - Author: Troll - Language: Japanese - ISBN: 978-4-09-291001-5 - Size: Approximately 21cm x 15cm - Color: Multicolor All volumes have some folds and wrinkles on the covers, but the insides are very clean. Thank you for looking.