Make her give you a blowjob!

You eye down your new pet. Her head rubs against your leg once more and she looks up at you with loving eyes. Her mouth forms a smile, slightly open with a little bit of her tongue sticking out. Her cute demeanor plants an idea in your head. You squat down to meet Eris at eye level and extend your hand, lightly grasping her chin.

"Hey, Eris!" You say to her, calmly. "Did that feel good?"

Eris responds by nodding her head, her smile widening.

"Good! Well, I think it's time to repay the favor. Would you like to make me feel good too? Then we could feel good together." You say.

Eris thinks for a moment. A determined, but confused expression appears on her face, as she looks up to you and nods again.

You smile and say: "Okay, then let me help you."

You stand up, walk over to the couch and sit down, spreading your legs so your crotch is open and available. You pat your leg with your hand, signaling Eris to come over. She does so on all fours until she has positioned herself between your legs. She places her hands on your legs, staring at your penis. It is soft at the moment but lightly covered in precum after the act of pleasuring her earlier. Her eyes narrow as she begins inspecting your crotch, looking at your genitals from multiple angles and sniffing the air around them.

You extend your hand and place it on top of her head. Attempting to get her closer to your dick, you pull her in, but the resistance she provides is much less than you were anticipating. You practically shove her head into your crotch, as her face presses against your dick and balls. You get worried for a second, what if you went too far and lost her trust? Did you make her mad? Is she going to bite your dick off???

Luckily, you breathe a sigh of relief as she begins rubbing her cheek against your crotch in a circular motion, seemingly fine with the situation. Her blue hair tickles your legs and you begin petting the top of her head. She keeps nuzzling your dick until it noticeably starts growing. She looks in surprise as your shaft becomes fully erect in a matter of seconds. She looks happy, but then her face turns to that of worry and she looks up at you, seemingly not knowing what to do next.

You giggle, grab one of her arms and place her hand around your shaft. You begin moving it up and down, showing her the basic motion of a handjob. She learns quickly and begins jerking your cock slowly with a firm grip. After a minute or so of this, you twirl your hand in the air, indicating her to go faster. She gets the message and begins to stroke you faster, tightening her grip more. Her skin is soft, but the **** of her grip is intense and arousing. The tip of your dick gets coated with precum quick, as she speeds up her handjob even more. At one point, she correlates speed with more pleasure, so she begins going faster and faster, jerking you harder and harder. It feels amazing, and you're surprised to see how fast she manages to go. At one point, you feel the urge to cum build inside you, and, remembering your initial plan, decide to stop her.

You place your hands on the arm that is now ferociously jerking you off and attempt to stop it, however, her eyes flash with a bit of anger, and you back off instantly. Not being able to hold back your orgasm for much longer, you cum, sending strings of semen onto Eris's face. At this point, Eris finally stops her jerking and looks surprised by the cum splashing her face. Once you finish cumming, your forehead drips with a few beads of sweat from the intense action.

You watch as Eris takes some of the cum with her finger and places it into her mouth. Her face remains blank for a moment, before lighting up in joy. Quickly, she starts lapping up the cum on her face with her tongue and fingers. And audible "Mmmmm" rings out from her as she quickly devours all of your cum. She looks back at your still hard cock and lunges towards it with her mouth, catching you off guard. She places her lips slightly below the tip and begins sucking. Not the sexy kind, but the drinking kind, attempting to suck out the cum straight from your dick like a straw. She doesn't get much out, but you see she is having trouble getting what she wants.

Still exhausted from the orgasm, you place a hand on her head and begin pushing her down softly. She struggles at first but seems to get what you're attempting to teach her. She follows your hand and goes down, her eyes pointed straight at yours, not breaking contact. You bring her head down almost to the base before she starts to give some resistance. You understand it's best to not go deeper for now. You pull her head back up to the tip and back down again. After a few repetitions, she gets into the rhythm and does it on her own, still not taking it all the way to the base. This is odd, since not too long ago, she had her own 17-inch rod down her throat.

A few minutes of this get her more confident to take you deeper. She plummets her head to the base of your cock and lets out a gag. She holds her head firmly for a few seconds before rising back up and taking a breath. She repeats this every few trips down with her mouth, and every time you feel the warmth of her throat envelop your cock, sending shivers of ecstasy down your spine. The risk factor involved in this gets you even more turned on.

She seems to remember the correlation of speed=pleasure and begins picking up the pace. The hand you placed on top of her head grips her hair a little from the surge of pleasure and begins guiding her more and more. After not too long, your other hand joins the first one as you begin moving her head up and down your pulsing cock. Even though you just came, your lust remains, making moans of pleasure escape from your mouth.

Multiple minutes pass as Eris slobbers on your dick, not controlling her spit. Your crotch becomes practically coated in saliva as Eris's tongue contacts your testicles every time she takes you balls deep. As you feel the inevitable orgasm building up inside you, your hips begin to thrust into Eris's mouth. An audible gag escapes from her with every thrust, making you more horny by the second. Your eyes look over to one of her hands, and it seems that she has been masturbating for a while now, her massive cock fully erect and dripping precum.

As the final push to orgasm comes, your head leans back and you begin to push Eris's head down on your dick faster and faster. With a final thrust, you hold her head tight as a torrent of jizz escapes from you. You let out a loud groan as your eyes roll back in ecstasy. You feel something wet touching your feet as well, no doubt Eris's own orgasm. After a few moments of ecstasy, your hands fall off of the girl's head and you let out a sigh of relief. Eris pulls her lips off of your cock, swallowing all of the cum you had to offer. She looks glad and tired. Her whole face is covered in spit, dirtying the front of her messy hair, and after blowing a bubble of saliva, she lays down next to the small puddle of cum that she poured out herself.

You take a minute to catch your breath, before looking down at her. You lean over and pat her toned belly, as she let's out a little burp. Giggling to yourself, you brush the hair out of her face and plant a kiss on her cheek before getting up and setting up to leave the testing chamber. Before you do, the intercom turns on and Alan speaks to you through it.

"Impressive, sport! You sucked up to her pretty well, and she seemed to suck up to you too, haha. The results of this test will help us greatly, and now, we can keep Eris here longer without having to worry about any casualties. Hopefully... Anyway, great job! We'll contact you if we feel like she needs your special touch, and once we find where to put her, maybe you'll even get to visit. For somehow solving this issue, I'll talk with accounting to maybe get you some bonus cash for this. That's it for now then, see you in another one!"

The intercom shuts off once again. You take a look back at Eris and smile, before heading back to your room.

You got the "Instructor" ending with Eris.