IANF-029 - Karma's a bitch! Watching my girlfriend get violated by thugs

Saku Ryu Umi gets kidnapped and ends up giving in despite her resistance. It's impressive to see her resisting with delinquent-like language that you'd never expect from her usual elegant self. Since you rarely see her resist this much in other works, it might be a rare find in that sense. However, I didn't really feel much eroticism.