A forbidden affair with my best friend's girlfriend... Unable to resist her alluring beauty, I gave in to my desires. Using Aika's own provocative advances as an excuse, I spent three days on my best friend's bed, repeatedly mounting her and satisfying my lust. Though burdened with guilt and self-loathing, I secretly revel in triumph as I gaze at Aika trembling in pleasure. None of us know where this relationship will lead—but still, we continue down this path.