User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-39.33.223.204-20171118131522/@comment-139.193.173.232-20171118142622

Interpol would be close to DxD team although i would say DxD is more like a spec ops team. ExE on the other hand is more like a CIA or KGB

Issei belongs to those two units/teams. His flashy moves will be very useful when he has to work with DxD team but his celebrity status will make him easily infiltrate all kind of places to gather inteligence for his ExE team