"Himari Nee-chan. I'm really going in this time."
Without saying a word, Himari Nee-chan nodded silently. I positioned the glans against her vaginal opening once more.
Squelch, pop, squish, slurp, plunge.
"Ah! Aaaahhhhhh!!!!"
Himari Nee-chan clenched her teeth, enduring the pain. Thanks to her efforts, I was able to fully insert myself to the base this time.
"I'm in. Himari Nee-chan. Welcome to the adult world."
"Who do you think you're talking to like that? Little Chi-kun♡"
Himari Nee-chan smiled while pinching my nose. Ever since we were kids, she'd punish me like this whenever I got cocky. Though she was smiling, I could see tear stains at the corners of her eyes. It must have hurt a lot. I'm sorry.
"I'm going to move now."
"...Okay, go slow."
Moving my hips carefully, I began slow, deliberate strokes.
Squelch, squish, schlick, plop, plop, plop.
"Ngh, ngh, ngh, ah, ngh, ngh, ngh, ngh"
Himari Nee-chan kept her eyes closed, enduring the discomfort.
"Are you okay? Does it hurt?"
"No, it stings a little, but it doesn't hurt that much anymore. More than that, it feels... really strange. Like this isn't my own body."
"Well yeah, that makes sense. You've got this inside you after all."
"Right. Hey... hey, you can move a little more now. I'm getting used to it."
"O-okay. How's this? Starting to feel good?"
"Mmm... A little, just a little. But the weird feeling is still stronger, I think."
"Then I'll have to make the good feelings win."
Straightening my back, I increased the pace of my thrusts.
Slap, slap, slap, slap, slap, slap, slap, slap, slap.
Himari Nee-chan's expression gradually softened. Just one more push.
Bzzbzzbzzbzzbzzbzzbzzbzz.
I pressed the suction vibrator against her clitoris. Good, her face was starting to look dazed.
"Ah, ah, ah, ah, ah, ah, ah, ah"
Moans escaped Himari Nee-chan's lips. She was getting close to climax.
"Ah, ah, ah, ah, ah, ah, ah, ah"
I was nearing my limit too. Time for the final push!
Slap, smack, slap, smack, slap, smack.
"Ah, ah, ah, ah, ah, ah, ah, ah, ah, ah"
"I'm cumming. Himari Nee-chan! Take my sperm!"
"Ah! Ah! Yes! Chi-kun's sperm, give it to me, ah! Ah! I'm, I'm coming again, ah, ah, aaaah!!"
Splurt, splurt! Sploosh! Splash, splurt!
As I ejaculated, Himari Nee-chan seemed to reach orgasm too, her body trembling with small convulsions.
"Haah, haah, haah, haah, haah, haah, haah, haah"
"Haah, haah, haah, Himari Nee-chan... that felt amazing."
"Haah, haah, haah, haah, haah, haah, I... I felt good too. Really good, honestly."
We gazed at each other, then naturally brought our lips together. This time it wasn't just a peck. Our tongues intertwined, mixing our saliva in a deep kiss.
"Chu... mwah... slurp... ngh... ngh... ngh..."
We changed angles repeatedly, craving each other as if years of longing had finally been fulfilled.
"Okay, I'll pull out now."
"Mmh."
With a wet pop sound, I withdrew, and semen began flowing out from her still-open vagina. I must have come quite a lot.