Thank you for viewing. Written by: Ryo Sugiyama, Illustrated by: Daisuke Nakagawa Milky Sugiyama Series, set of 5 books. Tenya Wanya Detective Yoi Don de Meitantei (Ready, Set, Detective) Kondo Koso wa Meitantei (This Time, a Detective) Nichiyoubi wa Meitantei (Detective on Sunday) Machigai Naku Tantei (Definitely a Detective) Not sold individually. The covers have some scratches and wear. I think the condition is good, but for those who understand that these are used items, thank you for your understanding.