No one's POV

We see a dark room with two chairs, with one of them already having someone sitting on it.

As she looks through the pages, the smile that's on her face fades away.

Woman: Oh no... I guess it's my time.

The girl then brings out a magic circle, and a young boy comes out of it, that boy being Y/n L/n

Y/n: Uhhh... Where am I...?

Woman: You're in the underworld, dear.

Y/n: Underworld...? THAT'S MEAN I'M IN HELL?!

Woman: Not particularly.

Y/n: Okay then...? And you are...?

Irinlia: I'm Irinlia, your Guardian Succubus.

Y/n: Wait. Don't you mean Guardian Angel?

Irinlia: No, I mean Succubus. Because I am a Succubus.

Y/n: No, stop lying! There's no such thing as a Guardian Succubus!

Irinlia: I'm a Succubus!

Y/n: Angel!

Irinlia: Succubus!

Y/n: Angel!

Irinlia: Succubus!

Y/n: Angel!

Irinlia: Succubus!

Y/n: Angel!

Irinlia: Succubus!

Y/n: Angel!

Irinlia: Succubus!

Y/n: Angel!

Irinlia: Succubus!

Y/n: Succubus!

Irinlia: Succubus!

Y/n: Dang, I thought that was going to work.

Irinlia: Yeah, I've had that happen with me so many times, I've basically learned the patterns.

Y/n: So you really are a Succubus...

Irinlia: I am.

Y/n: Then answer a few questions for me. For starters, what exactly is a guardian succubus?

Irinlia: Well, you know how people believe Guardian Angels protect the people they're assigned to, and they would serve that person?

Y/n; Yeah.

Irinlia: Basically, we're the same, but we get assigned to the most horniest people.

Y/n: WHY THE HELL AM I ONE OF THEM THEN?!

Irinlia: Mainly because of your futadom fetish.

Y/n: Oh...

Y/n then puts his head down in shame, and Irinlia walks over to him.

Irinlia: You don't have to worry. I was a greater succubus, assigned to you by the Empresses of Hell herself, Lady Riseth.

Y/n: Riseth... I've heard of that character before...! Isn't she just some random character that Wattpad Author Grimcreeper58 came up with for some of his stories using Lu from Elsword as a reference image?

Irinla: You'd be surprised how true they really are. She has a multitude of powers, and one of those is to allow certain souls to be reborn as Succubi.

Y/n: Oh that's coo- wait. IS SHE GOING TO TURN ME INTO A SUCCUBUS?!

Irinlia: *giggles* Yes she well. A Futanari Succubus to be exact. And she wants you to be the first test subject of the Futanari serum that she's been working on.

Y/n: But me...?

Irinlia: You should consider it a blessing. She normally uses herself for these, but she's willing to use you for it.

Irinlia then leans towards Y/n's ear, and says one thing in a whisper tone.

Irinlia: She even said she would be willing to turn you into whatever female you want if you do this willingly.

Y/n: You serious?

Irinlia: I am.

Y/n: Well... I guess I could try it... As long as it's safe.

Irinlia: Don't worry. It's perfectly safe, and the worse case is your lust becomes out of control.

Y/n: Doesn't make it better!

Irinlia: Well, let me take you to her then.

Irinlia then helps Y/n out of the chair, and she brings him to Riseth.

Irinlia: Lady Riseth, I have brought the human I've been watching over. He has accepted your request.

Riseth: That's great!

Y/n: If I remember correctly... Is this her loli form?

Riseth: *giggles* Aren't I cute~?

Y/n: You are, but it's hard to take you seriously in that form.

Riseth then smirks and goes back to her true form.

Riseth: Is this better~?

Y/n: Very much.

Riseth: Good. Now, which female character would you like to be as a Succubus?

Y/n: I was thinking about it on the way here... And I've decided... Akeno Himejima!

Riseth: Very well. Then let's begin the first part.

Riseth then casts a magic circle underneath Y/n, and after a giant beam of light, Y/n is shown in his new form.

(A/n: I'll be using male pronouns, since a futa is a combination of both male and female parts. And since Y/n was a guy, it would make sense to use male pronouns. If you don't like it, then I'm sorry, but you can just imagine it then.)

Y/n: Wow... *gasps* I even sound like her!

Riseth: You like it then?

Y/n: Like? I LOVE IT! THANK YOU!

Riseth: You're welcome. And now for the final part.

Riseth then hands Y/n a potion containing a black and purple liquid.

Y/n: *gulps* Are you sure this is safe...?

Riseth: It is. Trust me.

Y/n then takes a deep breath in, drinks the liquid, gulping all of it down, and places it on the table that's near them

Riseth: So...? How do you feel?

Y/n: I feel fine...

Riseth: Odd... Normally something happens after that.

Y/n: Then I guess I'm good to- *screams in pain*

Y/n then falls right down to the ground, as his body starts to change, with his dick growing many sizes longer, being 69 inches long and 45 inches thick. This did cause the panties that were placed on Y/n to tear, but other than that, Y/n was fine.

Riseth: Wow...! I knew it would be big, but not THAT big! Are you alright Y/n?

Y/n: Ara, Ara~ I've never felt so better before~

Riseth: Well, just as an apology for what just happened, here. I'll grant you a few powers that you might find useful. Now, are you ready for your new life~?

Y/n: Ready for a while now~

*Time-skip*

Location: Y/n's New House

It's now been around three whole months since Riseth brought Y/n into his new life, and let's say he's taking full advantage of it.

The scene then changes to show Y/n in his room with a clone he created with his magic to basically plow to girls at the same time.

Y/n: I seriously still can't believe you girls "cum" to me every day~. Don't you both have boyfriends~?

Yukana: Y-Yeah... that's true but... I like... Can't get enough of your *moans* Big Fat Cock~!

Marin: Yeah! G-Gojo only makes g-good cosplay cost- *moans* umes for m-me!

Y/n: *grunts* In other words, you can't get enough of me!

Y/n then thrusts his dick deep in, with his clone doing the same, making both the girls lean their heads back in pleasure.

After a full hour of Y/n fucking the living daylights out of them, Y/n's dick starts to twitch.

Y/n: You two ready~? I'm going to cum inside you both~!

Marin and Yukana: DO IT~! *moans* PUMP US WITH THAT SWEET CUM WE LOVE~!

Y/n: Then take it all!

Y/n then makes one more final thrust, and pumps tons of seed inside of them, getting them both pregnant.

Marin: Sho Good!

Yukana: Y/n's pumping with her baby serum~! It's so warm~!

Y/n then pulls out, leaving the two girls a broken mess, while cleaning himself up, and desummoning his clone.

Marin: Hey Y/n... Me and Yukana... we weren't taking any birth control...

Y/n: So you definitely got pregnant? Don't worry. I'm sure you two will make great teen moms.

Yukana: I hope you're like... right on that... I'd love to have your cute babies...~!

As Y/n shuts the door, she changes into her school outfit.

Y/n then starts walking to her school, which is Kuoh Academy.

Y/n: *GIF Below* Ara, Ara~. My Lewd Life as a Succubus has be so much fun~! I'm glad I had a Guardian Succubus instead of those stupid Guardian Angels~!

Y/n: And now... I'm going to do what I can to impregnate every girl in this school, and turn every male into a femboy breeding bitch~! This school will become my playground, and I'm already making my moves!

As Y/n enters the school, he runs into Rias, who smiles when seeing him.

Rias: Good morning, Y/n~

Y/n: Morning Rias~

As the two hug, Y/n whispers something in her ear.

Y/n: After school, we're doing it~

Rias: *blush* Alright. I'll make sure I'm ready.

As Rias walks away, Y/n smirks.

Y/n: And my first person I'll hit, will be Rias, and then Issei, as I'll turn him into my first femboy breeder! It'll be a great way to teach that pervert a lesson!