*The blob noted the girl was trying to will herself into a trance. It gives a chitter as if to say "whatever helps you get through this" and slides the tentacles under her swimsuit through the legholes, feeling up her body underneath, slowly tearing the slick fabric off as the gel rubs along the opening to her sex, almost like a toy, seeking to loosen her resistance slowly and surely.*

Easier said than done.
Suichi was trying to concentrate, but in vain.
Suddenly a soft moan came out of her mouth, hey body was starting to betray her mind. The soft sensation of the gel was something new for Suichi, it was disgusting but felt nice. With her limbs restrained she could do no more than fight against her body, she was doubting that she'll succeed.

*The fat tentacle spread those moistening sex lips open, her virgin slit seeming to almost welcome this invader in as her swimsuit started to tear in the front, the gooiness engulfing her breasts, coming between the fabric and skin, feeling like soft hands gripping her as Suichi starts to feel the blob enter her with noted deliberate pushings and wigglings, feet locked firmly into the goo as it plays with her body and her inexperienced mind.*

As Suichi's inners were fillled with the gooey substance she cried "NOOOO" but the sound of her voice lowered quickly as the blob grabbed her breasts. The tearing of the swimsuit ended by revealing all of her intimate parts. Being exposed and raped by the gelatinous creature, Suichi tried to imagine it was with someone human who was doing that to her, but the sensations were beyond humanity, she knew she couldnt hold herself for too long, the stimulation was strong, and her mind was weakening every second.

*Suichi's hymen wasn't so much torn as dissolved as the fat phallus pounds her, the bulk of the goo bringing her to her knees, engulfing and caressing. Her arms were pulled behind her back as she now felt herself consumed up to the waist, bounced inside this alien invader, the black gel forming hands over her exposed breasts, pushing the torn swimsuit aside as she is fondled and violated in earnest now.*

Suichi was sweating by now, all the forced movement were getting her on. Until suddenly, it happened, the gooey phalus had broken in her natural barrier, she didn't fell too much pain, rather a small unconfortable sensation that was completly minimized by the pleasant sensations the creature was giving her through her outer regions.
All that excitment was giving her strenght, now with her hands fisted, she was trying harder to break her arms free, but her efforts were futile.
Suichi's exposed breasts were soon grabbed by the gelatinous black ooze, it felt like the swimsuit, but with a tighter grab. Suichi's moans were getting louder as she was starting to feel the begining of an orgasm.

Suichi quickly lost balance, and soon the blob rolled her to the side, top leg raised in the air, the bulk of the goo weighed down on her lower thigh, pushing that phallus in and out of her pussy, another tendril formed, teasing her little rosebud in the rear, the swimsuit totally eaten away as those firm breasts were tweaked and jiggled, the girl's hair a mess as her back was arched.

Suichi had lost all control over her body and mind, she could think no more in how to get out of that situation nor screaming nor asking for help. The vibrations and thrusts were too much for her inexperienced body to resist. She was already moving herself along with the phalus, complementing it.
"Are you done with your tagging?" was all she could say between her moans, hoping than only her vagina was raped. Suichi was afraid that that the creature would attack her rear too.
She had to take an enema 2 years ago in the hospital and having something back there, was something she didnt want to experience again...
Then, as the memories of her clinical experience were fading, the creature turned her to the side and started to tease her ass "Nooo please!! not there!!"", her anus tensed, not knowing that it would make it tougher for her... Suichi's hairpin fell off releasing her hair from the ponytail, covering half her sweating face. Of the swimsuit, only a few scraps were left in her back, hanging from her shoulders.

"If I have to properly tag ya, I have to stick it there. No worrying your pretty head. I'm almost done anyway. And might I say you're quite a trooper about it. I should think I should give you a proper reward..." The black mass slid along her back, absorbing the last of Suichi's suit, leg raised at the lewd angle as the second tendril moistens itself, pushing within, acting like a piston within the girl, pushing in as the main phallus pulls out, pulling out when the phallus thrusts in, each time an artificial wave of pleasure filling her, as if this despicable act were giving her a scent of euphoria, of relaxation...

Suichi cried in pain as her rear was penetrated, to her luck the tentacle was slimy in itself, so there wasnt too much friction in there, but still, it was a gross sensation that brought a couple of tears from her eyes.
As the piston-like movements started, Suichi began to feel pleasure in one hole and pain in the other, it was like half of her wanted that to stop and the other half wanted to keep going, she was so confused.
Eventually, Suichi started to relax her tense muscles, as her slime-covered body was getting tired, she no longer tried to break her limbs free, and at that point, the second tentacle inside her slowly stopped feeling painful, instead as the combination of both tentacles going in and out alternately, both stimulations merged into one alone sense of excitment.
As her moans grew louder, Suichi was seconds away from reaching her climax...

*The blob noted the relaxation and knew that Suichi had given up struggling and yielded to the sensations. Both phalli started to vibrate inside her sensitive passages, deep within her core as it absorbed her juices and sweat, the blackness starting to recover her body in the places where the swimsuit covered, constricting, massaging those muscles as the membrane between pussy and ass was given a soft pinch. The eyestalks slid around her neck, looking deep within her eyes.*

Suichi's weak body was now recieving a different treatment, the thrusts between her legs had stopped, but in change they started to vibrate inside her, making vibrate her abdomen along.
As the ooze covered her body, she felt more secure, as it started to embrace her, she felt warm. The violence of the encounter had been hindering her orgasm, but now that she had given up on strugling, everything seemed different.
The massaging of her tired muscles felt really nice, and the vibrations inside her turned all those sensations into sexual pleasure, Suichi was now having her orgasm, just for those moments all her anger and uneasiness vanished.
Her breathing was very fast, and was mostly through her mouth. Then she noticed the creatures eyes had stalked up to her face and were fixed on her eyes. Suichi wanted to say something, but her mind was so confused she didnt know what to say, if to tell it to stop or to not stop, all she could do was stare at it with an impotent gaze.

*The pleasure from the orgasm racked her tiny body, Suichi convulsing as the black goo cocooned her, giving a few more thrusts within her, seeming to extend the time of her first peak, and soon another wave of pleasure works at her. Each touch inside her seems to awaken her libido, her desire, flushing out all of her insecurities as this blob seems to have found her inner core, helping to purge her of the impurities, those eyes seeming to peer into her soul.*

Suichi was at her peak, and the creature was making sure to keep her there, maintaining the stimulation on her inners on and steady.
She felt like if she was going to faint, she closed her eyes and just enjoyed the moment, for as long as her tired and ooze covered body would last. She didnt know if it could be a few more seconds or minutes, all she knew was that the two phalus inside her, the grip on her breasts, the coolness on her back, the tight feeling in her waist, and lastly the embrace of her long neck along the restrainment of her limbs had left her completly inofensive to anything the creature could do to her.

*The girl bounced on that ocean of goo that rolled and pitched her, all of her juices flowing from her spasming pussy into the blob, absorbing her fluids like a sponge as the blob finally adds the finishing touch: a spray of its nanite dye deep into her ass, the ichor dissolving deep inside her core, briefly driving Suichi's inexperienced body over the edge, nearly having her black out just then. No, she keeps conscious. Eyes were wide, and the blob notes a bit of drool coming from her lip as eyes were rolled back, the girl literally fucked silly*