High School DxD: Asia & Koneko's Secret Contract!?

Can this duo of devilish darlings really grant any wish?!

The naturally clumsy Sister Asia and taciturn cutie Koneko form an unlikely pair as they head out to answer summons from humans with requests, but...can they really fulfill every desire?! These two little devil beauties get down to work in this spin-off of the megahit High School DxD!