Increase Annabelle's Libido

When I get back from classes today, I'm getting a little antsy. All this modifying of women is making me horny, but Annabelle doesn't get home until later. For now I'll just wait a while... actually, I should actually prep for classes as well.

By the time Annabelle is home, I've been done prepping for classes for a little while, and am feeling horny again.

"Hey, maybe we fool around tonight?" I ask.

"I'm beat from today. I hope you don't mind, but I'd rather not." She replies.

Normally, I wouldn't mind, but that changed when I got the app. I don't have the points for it right now (39), but after tonight I'll have 54, so I could purchase it. For tonight, I guess I'll resign to masturbating again. 17/200 XP.

The next morning, I go through the app, and purchase the libido upgrade for the 50 gems. The new price goes up to 100 for another increase, and I'm left with 4 gems. 14/200 XP.

Hopefully this will help get me laid more and speed up my xp gain...

In class with Ms. Nakamura I decide to idly look through some of her other costs besides body modification and note some of the interesting ones.

It'd apparently cost me 400 to increase her intelligence, and 200 to decrease it. Her Libido upgrade only costs 4, which means she's almost as frigid as they get. Then under teasing, I notice that there isn't a button for lose bra. I close and open the app, in case of a bug, but its still missing. But when I look up at her, I can just barely tell that she isn't wearing one. Maybe because she used to have no tits, and small nipples, she never wears them, so I don't even have the option. Its good to know that the app is looking out for me in that regard.

When I get back that night, I again proposition Annabelle, this time though, she seems almost eager to go at it.

We go to the bedroom and get the lube and condoms, and get on the bed, in our normal position, missionary. Sometime I'd like to get her to be more adventurous, but for now, I just want to feel her pussy and watch her tits bounce, and bounce they do as I pound into her. After a little while, she's moaning too, and I can tell she and I are both getting close to orgasm. I take the opportunity to tease her clit until I feel her begin tightening up.

Not much later, she's orgasming, and the sensation pushes me over the edge as well, as I fill the condom with cum.

As I pull out, she sighs, "Thanks, that was good. Could you give me the condom? I may as well get my fill of cum now."

"Uhhh, sure." I say, carefully removing the condom, and handing it to her as she tilts it up so she can drink the cum from within.

We each get cleaned up, and she goes to work on her notes from the day as I check the app. I'm interested in how much XP I got, considering it said I'd get some extra xp for a gem girl orgasming while in contact with me.

74/200 xp

Last time I'm pretty sure I got 40. So maybe I got an extra half from her orgasm?

As I ponder this, my mind wanders a little bit related to Annabelle. If I increase her libido multiple times, would she always want sex? Would she cheat on me if I put it to high and couldn't fulfill her needs?

That said, the thought of her always really wet, and willing to have sex, massive perfect tits and a big toned ass.

Fuck.

I'm hard again.

I begin jerking it and then imagining the other women Ms. Nakamura and Jessica also there, ready to be fucked. Maybe more women. Any women I want.

I cum, and clean up. Thankfully Annabelle is focused on her notes for class.

I check the app again 84/200xp , and see that I got an achievement.

Manual: Achieve 10 orgasms by masturbation for XP. 5 Gem reward. 1/? Next rank at 50 orgasms by masturbation.

My gem total goes up to 9 now.

Does that mean I'll get them for other sexual positions? Blowjobs? Vaginal? Anal?

I'll have to keep that in mind.

For now, I think I'll maybe focus on trying to get the next rank of Upgrade! Since I only need to get 2 purchases on Annabelle to reach it. I mean, if I'm fucking her all the time, I might as well make it even better for me right?

As I think about it, I definitely wanted to increase her tits' firmness again, and given their size, I could do with increasing the areola and nipple size each once, and heck, another increase in her ass. That'd cost 20 gems, and tomorrow morning I'll have 23, so I'll have 3 left over. Well, I doubt any emergency would come up where the potential amount I would have had would matter.

Having planned out how I'll spend tomorrows gems, there's not much left to do except actually get to tomorrow, which tonight means doing my own studying, then sleep.

Thursday, when I wake up, I go through my pre-planned purchases, and then re-affirm everything's cost on Annabelle at this point. Before checking the achievements.

Breasts
Increase Cup Size - 20 Gems
Decrease Cup Size - 10 Gem
Increase Firmness - 10 Gems
Decrease Firmness - 5 Gem
Increase Nipple Size - 10 Gems
Decrease Nipple Size - 4 Gems
Increase Nipple Sensitivity - 10 Gems
Decrease Nipple Sensitivity - 5 Gems
Increase Areola Size - 4 Gems
Decrease Areola Size - 2 Gem
Change Shape - Variable Gem cost

Ass
Increase Size - 10 Gems
Decrease Size - 5 Gem
Increase Tone - 4 Gems
Decrease Tone - 2 Gem
Increase Sensitivity - 10 Gems
Decrease Sensitivity - 5 Gems
Increase Anal Sensitivity - 20 Gems
Decrease Anal Sensitivity - 10 Gems

Pussy
Increase Tightness - 20 Gems
Decrease Tightness - 10 Gems
Increase Lubrication - 20 Gems
Decrease Lubrication - 10 Gems
Increase Internal Sensitivity - 40 Gems
Decrease Internal Sensitivity - 20 Gems
Increase Clitoral Sensitivity - 40 Gems
Decrease Clitoral Sensitivity - 20 Gems

Mouth
Increase Gag reflex - 5 Gems
Decrease Gag reflex - 10 Gems

As I leave the purchases page, and look at her profile, I can see how many purchases I've made on her so far: 12.

On Achievements I've earned:

Upgrade!: Make at least 10 purchases on a single gem girl. 1/? 10 Gem reward. Next rank at 25 purchases on one girl.

13/150 Gems

The big question now that I'm pondering is do I wait and save up gems for my next level up, or whenever I'm nearly full, or keep spending haphazard like this? Don't get me wrong, I understand that I SHOULD save them, but there is such a rush to spending them, that its hard to resist.