Eve doesn’t trust it

“I’m sorry, Ai.” Eve says as she starts walking over to the tree. “You may never have strayed us, but the information you got came straight from a Matriarch. It's her I don’t trust."

“Why don’t I try it first.” Ai suggests.

Ai grabs the chalice with both her hands, puts it to her lips and starts drinking the pink liquid. It is sweet and tastes like strawberries. But when Ai puts the chalice back down, Eve grabs the fruit from the tree, inspecting it.

“What’s it like?” Eve asks Ai.

“Well, it tastes like strawberries, and …” Ai says, but then stops. Her body starts feeling numb.

Eve keeps looking at the fruit she's holding. They've come all this way, gone through all those monsters, just for a cup of strawberry juice and a fruit?

"....This fruit better be damn delicious." Eve says as she throws all caution to the wind and takes a bite out of it.

“Eve … I feel numb all of the sudden.” Ai says.

Eve drops the fruit and rushes to her sister’s side, trying to catch her with her one good arm. Luckily Ai decides to sit on her knees before she falls. As the room seems to spin around Ai her breasts grow a cup, her butt curves to look more sexy and her body reverts a few years in age, until she appears like a voluptuous eighteen year old.

While Ai is changing, Eve starts to feel numb and drowsy herself. She too gets down on her knees and goes through a similar transformation. Like her sister, her boobs grow a cup, her butt gets sexier and her body reverts in age to appearing eighteen. There are however two differences. The first is that her arm with the dislocated elbow starts to heal. The arm slowly twists itself into place and all internal damage is repaired which, due to the numbness, she doesn’t feel a thing. The other difference is between her legs. Her clitoris starts swelling up. A little in girth, a lot in length.

When Ai’s drowsiness recedes she takes a look at her sister. She looks younger, sexier, with bigger boobs. Ai already loved her sister enough to want to make love to her, but now she 'needs' to have her. Then she notices her sister’s giant clit. No wait, it looks more like a tiny penis. Ai’s mouth drops open from the shock. She looks at her own pussy to see if she grew a dick too. Nothing. It must be something the fruit caused. When she looks back at her sister’s dick it is even bigger. She reaches out with her hand and wraps it around Eve’s dick. It is smaller than her hand, but grows inside of it. When it finally stops growing it is bigger than her hand.

When Eve finally regains the senses of her body, she feels incredible pleasure between her legs. She looks down and sees her sister’s hand jacking off a dick that seems to have grown out of her pussy.

“Ai? What are you doing? What happened?” Eve asks.

“I’m sorry, Eve.” Ai says. “I have been surrounded with so much sex going on around me. But if I ever gave in I would be claimed by the tower. I have been so frustrated for so long. I just need to get this out.”

Ai fears Eve won’t let her have sex with her if she knows it’s because of love. Maybe if she can blame it on a basic need instead of an emotional one, she’ll give in.

“Ai, stop this now. We're sisters.” Eve says.

“I don’t care.” Ai says as she looks longingly into Eve’s eyes. “I would have sex with a total stranger by now. I just need release.”

Eve grabs Ai's arm, and stops her from jerking her off. Ai gives Eve a look of disappointment, and wanders down to the lakeside.

"...Eve, you don't quite get it. I've been in this tower for almost a month at this point, and this place is nothing but sex. When I was running from monsters, I heard women moaning from the rooms I ran past. When I was trying to hide, I heard women screaming in pleasure as they were filled. I've been near this thing for a month and I haven't fucked a damn thing in the entire month. Eve, I need to get, laid. And I know that if we leave this chamber, it'll probably be Chloe or that Scylla thing that fucks me, and we both know that would mean the end for us. The end for who we are now. I'd rather just make love to you in this lake, without worrying about what else may happen."

"...But what if that fruit...changed me? What if I fuck you and you change or something? What if I get you pregnant?" Eve asks.

"Eve, look at us. We're already changed. And hell, if the thought of a child bothers you, just pull out." Ai asks. "Or...you can put a baby in me, and there won't be any chance of any of the Towerlings of putting one in me. It's the perfect solution."

"...But." Eve starts, before Ai cuts her off.

"Eve...come into the water...and make love to me." Ai says as she steps back into the lake, gesturing to Eve for her to follow.