She decides to try this sex thing, she has standing offers from several friends and from Illyria but she wants to understand it better herself before she involves other people. She retreats to her room and slowly starts exploring, trying to map how each square inch of her skin feels being touched. She's done this before when she was younger but Illyria has said it can change with puberty and puberty has clearly begun. For most of her skin she doesn't notice any changes even where there are changes they're mostly subtle, a bit more sensitivity here, a new sensation there. Her mental itch ratchets up in the background slowly enough to barely be noticeable. The most noticeable changes are on her limbs in their tentacled forms, especially around the tips with their phalluses or vaginas, her breasts, and the area around her vulva.
She finds her clitoris and tries rubbing gentle circles around it. It's easily the most sensitive bit she's found. She moans softly. It's nice in a way but it doesn't live up to the image she's built up after friend after friend disappeared to do nothing but sex for weeks at a time. The next thing to try is penetration, she forms a phallus at the end of one of her tentacles and positions it at the entrance to the vagina that's part of her vulva. Slowly she eases it in, again it's a nice experience but again it's not overwhelming. It's an odd sensation, her vagina feels very full while her phallus is being squeezed tightly. She finally notices the itch as it starts to become much more insistent. She keeps going deeper and deeper, when her tentacle is buried three feet deep inside her she slowly start pulling it out. That sensation is a little different form pushing in she tries to find words for the difference but doesn't quite manage it.
She tries her anus next, subjecting it to the same experiment. It's a little different? The texture on her phallus is different and it seems like the muscle structure is too. Again the difference is hard to describe.
The itch is becoming annoying, with normal itches they go away when you scratch them, this seems to be the exact opposite just getting stronger and stronger.
She tries her mouth next, she licks and gently squeezes it with her teeth, the shock of the sensation has her bite down hard and she yelps and pulls back. It takes her a moment to calm down and try again, firmly resolving not to try teeth again. Her tentacle makes it past her throat and then down to the branch point, she decides to try exploring her trachea first. It's an uncomfortable sensation but she presses on., She can feel as it splits again and slowly slithers a bit further reaching the entrance to one of her lungs before deciding to stop. Again it's a slightly different tightness around her tentacle but it feels wrong. If she wasn't trying to be through she wouldn't have stuck with it. She back tracks and pushes down her esophagus instead. It's a sensation? It's not really unpleasant but it's not feeling good either she keeps going and all of the sudden she reaches her stomach and doesn't think to stop until it's too late. She yanks her tentacle out uncomfortably quickly and breaks the rules just a little by using fleshcrafting to fix the minor acid burns. She has no plans to repeat that part.
In a bit of a silver lining, the itch seems to retreat a little in the face of pain.
She considers for a moment what she should do next.
She forms a tentacle with a vagina under the one with a phallus and brings them together. The curviness is slightly novel when compared to the mostly straight corridor of her her main vagina but otherwise the sensations are pretty similar.
The itch is stronger than ever and she's all out of things to try.
How do her friends manage to spend weeks doing this? Is it just the itch? It's pretty annoying but they seem much more enthralled than that. Also, are there really that many things to do? She supposes she hasn't tried doing multiple things at the same time, maybe that makes a difference?
Forming a second phallic tentacle she tries penetrating both her vagina and anus. She goes a bit faster this time, maybe urged on by the itch, maybe just because she doesn't expect much of interest. It's mostly pretty similar but the feeling of the two tentacles pushing on each other a little through the flesh in between is again an interesting novelty.
She tries a few more combinations, the different pleasurable sensations do seem to bounce off each other in her brain a little.
Maybe the key is repetition?
She strokes some tentacles in and out of herself a hundred or so times, varying the pace here and there. It certainly feels nice but it also builds up the itch to the highest level it's been.
Nothing she's trying seems to succeed at making it go away.