DAYUM!!!!! ... Props to Jun-kun displaying (as the song said) "... more discipline than a Shaolin Monk." in the face of serious girl-on-girl action between his girlfriend and Yukino-san; at least up to the point when he was invited to (ahem) "join in". Then again, he might have reached the limit of his self-control at that critical moment.
Ooh...A yuri release, plus a bit of actual sex too. I like it, a bit of both sides.
I find Jun's thinking quite interesting. I kind of agree on the point about if another guy asking that he'd be against it, not so sure on the 3some, but being okay if it's with another girl...Interesting.
Great ending though.
Naw thats pretty normal three way where its completely agreed upon by all involved is the only way. Even then i dont know it would feel wierd to me. Like either a im fucking abother girl while my woman watches or b im watching my girl get fucked by another guy neither seems plesent to me really...