IENFH-28701 - I played a suggestive prank on my very unguarded older sister and was instead asked for a sexual act. I was almost at the point of climax when I was locked with crab pincers and couldn't escape, resulting in penetration. Salty and sea urchin.

I was incredibly excited by the sight of my sister being so unguarded, to the point of wondering if she was trying to seduce me. Even knowing it, I couldn't help but lose control... Eh? Was she really seducing me? Before I knew it, I was following her demands and I couldn't stop myself either... But this is dangerous! After all, we're family! Ejaculating is dangerous! Crab pincer lock!?