To start, I (22 F Lapras) and my friend (21 M Pikachu) have been very close friends for a long time. We talk about private topics very often and are incredibly open with each other. One day while we were hanging out on the island when he brought up a strange fantasy he had. He said he really liked the idea of being fully inserted into the vagina, commonly referred to as “unbirthing” I believe, and that he really wanted to try it. I realised in that moment that due to our size difference I just might be able to help him out. I also cant deny that the idea turned me on too, I had never found someone who was “up to the task” if you see what I mean. This seemed like a good opportunity for us both so I asked if he would let me fulfil his fantasy and he enthusiastically said yes. Now, this wasn’t the first time we had engaged in sexual activities together but it was the furthest we had gone with each other and I was a little nervous. I was especially worried about hurting him as he is a good friend and I could never forgive myself if I injured him in any way. We found a secluded spot and we were ready to give it a go. I was surprised that he managed to get in on the first attempt and, well I’ll spare you the details. Eventually he caused me to climax and I got a bit lost in my pleasure before realising that my muscles contracting were suffocating my Pikachu inside me. My pleasure quickly turned to fear and guilt as I quickly turned my neck round to pull him out by his tail. Seeing him gasping for air, soaking wet, I felt awful for letting myself hurt my friend like that. He said he was ok and that I didn’t have to worry and at the time I was relieved and glad. However, the longer it’s been since then the worse i have felt about it. I can’t help but feel immense guilt. Was it really ok for me to lose self control like that putting my friend in danger?