Wow! that's a lot of experiences going to parties. I have seen these party posts based on nan-net sites, yeah I don't think myself in joining the parties since my Japanese level is at conversational limit, and I could read only with my basic understanding. Hence, I use translation to speed up in writing messages.
This may be not related to sex parties, but I did join up an interesting sex activity before in summer. Currently, I'm using this site,
https://oshioki24.com/, to find posts that shows newhalf details. I'm aiming to find only newhalfs - the ones that literally transition their bodies with natural breast growth. A lot of misses that never respond to my honest profile, but recently I just made contacts with 2 different persons. Now, I only have an upcoming sex meeting with a nice newhalf (2nd contact) few days later. The first contact (Chinese normal girl) was an absolute blummer to experience this quick...
I forgot to input my experience about that interesting sex activity. It's a safe gang-bang activity. Ideally, this activity should include 4 girls according to post description; nope, only 1 girl out of 4 was doing sex, the rest are chilling out.
We were more than 20 guys, and there were 3 organizers: nerdy chubby guy who handled my contact, a handsome young host-looking guy who taught me the ways of using condoms, and a large guy that watches the activity.
I don't know why we didn't get to sex the rest of girls, but the large guy madly explained their matter to us - probably due to overwhelming number of guys. My take I knew one particular fact was depending on their moods, which reflected towards guys' sudden behaviors, actions, and unexpected contextual atmosphere they made. Thus, we sexed 1 girl as a safe gang-bang.
I was the only foreigner to participate that activity (my first gang-bang), pretty sure I was an opportunist. Everyone was doing sex drive in just one position, and I just requested her to try changing positions afterwards. I did cum inside her using the condom just because she was great. I just thank for the hot host-like man to help me wearing the condom; I learned the hard way by wearing it myself. I just drank a breast-milk from the girl for the 1st time: I just thought I tasted like pudding flavor (she's married anyway). The play was pretty long as 4 hours, can be extended to play more. Sometime at our break time, we did strike conversations between us while eating sweet food. So I like that atmosphere.
That's all of this particular experience.
I will just relax down or refrain in finding sex soon lol.