Arago.

AR∀GO -ロンドン市警特殊犯罪捜査官-

Arago: London Shikei Tokushu Hanzai Sōsa-kan (AR∀GO -ロンドン市警特殊犯罪捜査官-; lit. 'Arago: London Metropolitan Police Special Crimes Investigator') is a Japanese manga series written and illustrated by Takahiro Arai. It was serialized in Shogakukan's shōnen manga magazine Weekly Shōnen Sunday from December 2009 to September 2011, with its chapters collected in nine tankōbon volumes.