Getbackers, Volume 21

Ginji and Ban, proprieters of the retrieval agency GetBackers, have special powers enabling them to get back anything taken from their clients, and

Books

Ginji Amano, Get Backers Wiki

GetBackers Volume 16 book by Yuya Aoki

GetBackers Volume 21 by Rando Ayamine

GET BACKERS Achados e perdidos - Blast

Get Backers ~action cues~ by Taku Iwasaki

GetBackers

Anime DVD - Get Backers Vol. 5 - A limitless and similar items

Detective School Q - Wikipedia

Eyeshield 21