I hadn't drawn anything omorashi-related in awhile, even though it's one of my big things, so here's Tanya and Miyuki conspiring to make Rasmus pop like a balloon. XD

Fun fact: This fetish is actually one of the first kinky things I thought of when designing Tanya and Rasmus, and I started planning a story way back then that I still haven't gotten around to thinking up the rest of. XD I kinda want to work on that, though.

Rasmus is an extreme masochist who loves all sorts of tortures and loves being pushed to his limit, enough so that he actually starts resisting (and he always uses safewords for that reason, for cases when it's actually too much, rather than him resisting but still enjoying himself). He also enjoys being embarrassed and humiliated.

Tanya is very much into watersports, including denying people the toilet. She also enjoys making people gradually lose their composure for any reason, and loves seeing people all blushy and flustered. And, of course, she loves being in the dominant role and is very good at it; she's especially good at reading the situation to judge what a person wants and how much more they can take.

Omorashi is thus one of the (many) areas in which the two are very compatible. I figure Miyuki sometimes joins in their omorashi games, since she enjoys teasing Rasmus and tormenting him in creative ways. Possibly she sometimes lets Tanya deny her the toilet as well (though she can't last anywhere near as long as Rasmus and is much more prone to accidents, but Tanya is into that too).

Not sure if I got their proportions right in relation to each other and everything, since the poses confused me, but close enough.