Granblue Fantasy - Kukkoro ka to Omoikiya Jitsu wa Soudemonai Hon (Doujinshi)

A bunch of bandits think they've found themselves a stereotypical defeated female knight for their next plaything, but they end up becoming her sex toys instead.

Note: Kukkoro refers to the stereotype of the defeated (usually female) knight who would choose death over dishonor and humiliation (typically through rape) with the lines 「くっ、殺せ！」 "Guh, just kill me already!" while under captivity.