You give her some love.

As you see Blue quiver, you're reminded how she saved your life not once, but twice. Of course, creating a pact with Seriath is probably a betrayal to Blue's efforts. You know that, but Seriath is powerful and you can't keep relying on Blue's jelly form or her quick thinking. Heck, you need to rely on yourself more, but you've acknowledged that this cavern which has slowly turned into a dungeon of sorts, isn't something to travel alone.

Stepping towards the slime girl, you try to comfort her. You've never thought you'd be trying to comfort a slime girl, but this one is completely different. The wide ranges of emotions she display almost make you forget that she's not human.

"Blue, I do need you. I'm ashamed to admit it, but I wouldn't have gotten this far without your help, but this is only going to become more dangerous and I'll take all the help I can get, monster or not," you explain.

Blue steps back and shakes her head. Seriath watches the exchange between you and the slime-girl with great interest as she crosses her arms and grins.

"What about my efforts? I thought we were-"

Blue stops herself, realizing she was almost about to proclaim partners. How silly of her. There is no such thing as a slime-girl and a human becoming "partners". No, she made a deal with you and only planned on using you as a means to an end so that she could explore the caverns more. Right now, your actions would simply jeopardize everything by allowing a succubus to join which is the problem.

"I'd like to think we are partners, Blue since we've come this far," you proclaim yourself, surprising the slime-girl. Even though she denied it, you went ahead and said it.

Blue scoffs. "Oh please...we're not equals, adventurers. You should know that I saved you because it's in my best interest, that's all."

Despite saying that, Blue is genuinely happy. Never before did she thought to hear someone to view a slime-girl as herself as a person to travel with. She feels foolish to be overthinking such a small thing.

You frown, deciding that Blue needs some convincing in order to show her you meant your words. Since you are already naked and your cock is rock hard, you had your own means to prove it.

"Fine."

You move close to her and slam your cock into her being. You don't care where you've penetrated her as you know she'll respond appropriately. Due to the **** of your hips, some of her mass slips out like a splash.

Blue shivers, feeling the heat of your crotch warm her insides but tries not to let it get to her as she yells at you.

"W-what are you doing?!"

You grin and try to maintain your breath. "What does it look like? I'm going to prove to you that I don't think of you any less. You need me and I need you, that's all there is to it."

Moving your hips, you grunt as Blue's jelly mass tightens around your cock and secures herself against you. Normally, you'd feel weak against Blue's attempt to milk you, but it's different this time. Thanks to the connection with Seriath, you feel more invigorated and stronger.

Dropping to the ground and onto all fours, you push yourself forward as best as you can as Blue cries in ecstasy, wrapping her mass around you. You prohibit yourself from cumming as long as you can with this increased stamina.

Seriath watches with increasing intensity and her pussy drips in excitement. She never thought that seeing a human and a slime-girl would look appealing, but there it is and with Blue's seemingly normal response to your attack, it makes the scene so much better.

She bites her lips and waits patiently, now wanting to go another round with her master. Better yet, with her current party.

"T-this is stupid...ah! Do you want to be...unh...dried up!?" Blue utters as her mass instinctively tries to milk you.

You grunt yourself, trying hard to focus in order to respond. "Of course not! Urgh! I trust you!"

With a loud grunt, Blue gasps as you explode into her very being. It's the biggest single ejaculation she's felt with regard to any human. Yet, that's not all. She feels uplifted to hear someone trust her. Trust was the last thing on her mind and for the longest time, she learned not to trust the cavern and its many inhabitants. Yet, you are trusting her, a slime-girl whom you shouldn't trust.

It baffles Blue...and also warms her.

You produce a loud gasp as your legs quiver, losing their strength as you pulse into the jelly girl. Blue moans quiets down and for a little while, her mass remains loosely attached to your hips. Eventually though, she slips away and allowing you to slowly rise back to your feet.

Blue stares at Seriath who watches with intensity and with a voracious look on her face. She still feels upset by having an enemy in their party but she finds herself feeling a lot better about the arrangement as you expressed your desire for her.

"Fine," Blue sighs, once again emitting a human sound that would seem unnecessary to her jelly being, "I don't like this succubus, but I'll follow along. Next time though, I'll make sure to prevent you from doing anything stupid."

You feel relieved that Blue is feeling better. It's strange how only seemingly days within the cavern, you already feel attached to this slime-girl. It once again raises the question of why this creature is different from a typical brainless jelly organism.

Seriath quickly pulls you out of your thoughts as she slides behind you, pressing her huge chest against your back and reaching around with her hand to caress your half-limp dick. You grunt upon her soft touch as she hums.

"This is all cute, but your little intercourse has affected me more than it should, master. What are you going to do about it, hm?"

You gasp, her sheer touch causing you to feel weak yet also grow horny. Honestly, you could easily pounce this succubus but Blue quickly takes a stand.

"No! Absolute not! We have to keep a move on!"

Seriath raises an eyebrow as she tilts her head past your back to look at Blue. She gives a small smirk.

"Oh? That's no fun. Well, I suppose I can hold out longer. Question is, can master hold out?"

Her fingers gently massage your balls and you flinch, your cock becoming revitalized thanks to the succubus. It's all unfair play but seeing Blue's expectation, you don't want to disappoint. The succubus is sure dirty to extract a response to make you feel like going for another round of fucking, but you hold out.

Pulling away, you take a deep breath and try hard to ignore your libido.

"Blue's right, we've stayed long enough in this chamber. Speaking of which, why is this placed so meticulously carved?"

The succubus frowns cutely at your resistance but is eager to find out how long you can last. In regards to your question, she shrugs, raising her hands in dismissal.

"Who knows? It works well though as a flat area where we, as succubi, can bring our prey if we want a more smooth flooring. It's probably some sort of ancient civilization that carved into this stone and trust me, there is more like this. I've never bothered to explore."

Blue feels like this is important information as she has never been this far down before. Yet, the succubus holds no interest in the secrets or has any sense of adventure. It only further frustrates the jelly creature.

Keeping her emotions in check, she questions the succubus further. "Are there more chambers like this? More importantly, where is the rest of your sisters? We've traveled down far enough and haven't seen any of them."

Seriath hums in disinterest but answers regardless. "Most of my sisters are outside of the cavern, living amongst humans and making their ends meet. The rest of them are further down. You'll be happy to know that from here on out, the walls and entrances are carved and smoothed."

You feel uplifted by the news that the linear path moving forward will no longer contain sharp edges and problematic slopes. If it weren't for Blue, you'd honestly have taken some damage in your feet and legs.

Seriath leaves your side, her pussy dripping yet she is able to keep her composure, moving ahead. "Well, I suppose you both want to move on now. I'm sure many of my sisters will be interested in meeting you two."

Blue feels some fear in meeting more succubus. It took a lot of effort just to take down Seriath, after all. Apparently, you felt some apprehension as well.

"W-wait! How do we know your sisters won't try to claim him?" Blue questions.

Seriath pauses and gasps, realizing that she hasn't mentioned anything to you or the slime creature about herself.

"I suppose I should've explained why it's better to make a pact with me other than gaining my strength. Once we make a pact with a human as a succubus, they are marked and cannot be taken away. Only the queen has the authority to take someone away."

Ah...so you're essentially her property. Great. It doesn't feel at all like you're the "master" here. Still, you'd rather have some assurance that you won't be milked dry by any of the succubus, including the queen.

"D-does your queen reside here?" you ask, worriedly.

Seriath raises her eyebrow questioningly and then gasps silently.

"Oh! I never thought to tell you - I am the queen."