😈 Sakusei Kenkyujo (The Seed Extraction Lab) / Umeda
The Next Generation of “M-Seikan” has arrived like a comet, now reigning at the peak of the industry.
In an era where the “M-Seikan” (Masochistic Sensual Massage) scene is aging, we bring you a hybrid professional lineup of “Chijo” (Nympho/Succubus) therapists. They combine youthful energy with top-tier technical quality.
We also feature a roster of highly skilled veterans with refined techniques.
- Will you enjoy the next-gen therapists who have evolved rapidly by learning from the masters?
- Or will you be dominated by our hybrid succubi, where youthful innovation meets legendary ancient techniques?
The choice is yours.
🏛️ Store Information
Sakusei Kenkyujo (The Seed Extraction Lab)
- Service Type: Delivery Health (Femdom-style Massage / Umeda & Kitashinchi)
- Phone: 06-6366-8755
- Tip: Mention “I saw you on CityHeaven” for the best service!
- Hours: 24 Hours / Open Year-Round
- Dispatch Area: Umeda, Osaka [Details]
🔗 Official Links
- Official Website (PC): https://sakuseikenkyujo-umeda.com/
💡 Tips for English Speakers
- M-Seikan: This refers to a “Masochistic” massage experience where the female therapist takes a dominant role.
- Succubus/Chijo Experience: The term “Sakusei” literally means “Seed Extraction,” implying a highly intense, draining, and pleasurable experience.
Would you like me to create a short “How to Order” guide in English for international customers?
💎 Pricing System (Transparent & No Hidden Fees)
Our pricing is straightforward. We start the session immediately upon arrival, giving you an extra 15 minutes of value compared to other shops.
❖ Course Fees (Tax Included) ❖
| Duration | Effective Time* | Price (JPY) |
| 60 min | (Equivalent to 75 min) | ¥29,700 |
| 80 min | (Equivalent to 95 min) | ¥35,200 |
| 100 min | (Equivalent to 115 min) | ¥40,700 |
| 120 min | (Equivalent to 135 min) | ¥46,200 |
| 140 min | (Equivalent to 155 min) | ¥51,700 |
| 160 min | (Equivalent to 175 min) | ¥57,200 |
| 180 min | (Equivalent to 195 min) | ¥62,700 |
*We provide 15 extra minutes of value by starting the session immediately!
❖ Other Fees ❖
- Registration Fee: ¥1,100
- First-time Nomination: ¥1,000
- Returning Nomination: ¥2,000
- Special Nomination: FREE (Limited Time Offer!)
- Extension (30 min): ¥15,000
- Transportation Fee: ¥0 – ¥6,600 (Depending on area)
✅ Our Promise
- Transparent Pricing: You will never be charged more than the prices listed above.
- Credit Card Friendly: No credit card processing fees. All major cards accepted.
- Immediate Start: No wasted time—your experience begins the moment we meet.
We look forward to serving you!
📍 Dispatch Area & Service Details
【Shop Name】
Sakusei Kenkyujo (The Seed Extraction Lab)
【Operating Hours】
24 Hours / 7 Days a week
【Base Location】
Umeda, Osaka
【Contact Number】
06-6366-8755
【Available Service Locations】
We provide out-call services (delivery) to the following:
- Private Residences
- Love Hotels
- Business Hotels
🚕 Transportation Fees (One-way Travel Time)
Fees are calculated based on the travel time from our base in Umeda.
- FREE: Local/Immediate Area
- ¥1,100: Under 10 mins
- ¥2,200: 10+ mins
- ¥3,300: 20+ mins
- ¥4,400: 30+ mins
- ¥5,500: 40+ mins
- ¥6,600: 50+ mins
- Over 60 mins: Please inquire for a quote.
Note: Please feel free to ask our staff for the exact fee when you provide your location.
🔥 Service Menu & Options (All Included for FREE)
At the Seed Extraction Lab, the following “Core Play” is included in your course fee at no extra charge. Experience the ultimate domination.
【Standard Free Play】
The Finale: Seed Extraction Control (Total Bliss & Drainage)
Sensory Play: Eyemasks, Earplugs, Feather Touch
Breast & Nipple: Nipple Licking & Intense Stimulation
Body Service: Full-body “Lick Service” by the Chijo (Succubus)
Intimacy: Deep French Kissing, Dirty Talk (Femdom Style)
Oral Technique: Deep & Wet Fellatio, Ball Licking, 69 Position
Domination: Face Sitting (Face Riding)
Hand & Body: Handjob, Riding Sumata (Thigh-press), Mouth Ejaculation
Deep Stimulation: Prostate Massage / P-spot Stimulation
Scenario: “Gyaku-Yobai” (Surprise Night Visit/Ambush)
The Full Experience: All Nude service
Ultimate Release: Unlimited Ejaculations within the time limit
💡 Information for Visitors
- We are an Out-call (Delivery) service. Please provide your hotel name or address when booking.
Girls’ Review
Profile
Name: Seira Tachibana
Age: 27
Measurements: T150 / 88 (E) / 53 / 84
Questions for the Girl
Q: Special nomination fee (first time)
A: Free for a limited time
Q: Special nomination fee (after second visit)
A: Free for a limited time
Q: Job
A: Esthetician
Q: What kind of men turn you on?
A: M-type guys whose nipples and penis are extremely sensitive ❤️
Q: What kind of reactions from men excite you?
A: When they moan a lot every time I touch their sensitive spots ❤️
Q: What are you best at teasing?
A: The whole body ❤️ Especially nipples and the glans—I love it 💞
Q: What’s something a man said that made you happy?
A: A heartfelt “thank you” makes me happiest ❤️
Q: If the world were ending tomorrow, what would you do?
A: Spend the whole day relaxing and eating delicious food!!
Q: What would you like to be called?
A: Call me whatever you like, big brother ❤️
Q: Lastly, a message to customers!
A: Let yourself get addicted to being teased and overwhelmed with pleasure ❤️
Appeal Comment
Nice to meet you, I’m Seira ❤️
Thanks for checking out my profile 💞
I love M-type guys who are sensitive in their nipples and down there 💕
What I’m good at:
Teasing the glans! (I can be soft and gentle too… you know? 💞)
I also love nipple play and prostate play ✨
Of course, I love all kinds of naughty things too… ❤️
Please choose from the options below 😆
Options
❤️ Soft Reverse Play ❤️ ¥3,000 (tax included)
You can touch and be licked all over below the neck!!
Wand massager rental is OK 💞
I love being teased!!
But… I also want to tease a little…
Highly recommended for you✨
❤️ Urine Play ❤️ ¥3,000 (tax included)
Pouring / Drinking / Watching / Taking home
Anything is OK!!
Reservation required in advance!
❤️ Cosplay ❤️ ¥1,000 (tax included)
- Shy esthetic uniform
- Leopard cat costume 🐱
- White cat costume 🐱
- Sexy maid
- Dominant bondage queen
- Naughty police
❤️ Pantyhose ❤️ ¥1,000 (tax included)
Choose brown or black!
Manager’s Comment
【Ultra-Revealing Paper Underwear】Limited to 50 customers!
A tiny piece of fabric that stimulates your senses
and sends your imagination into overdrive—
a thrilling, barely-there design.
💥 Now offering a “Free Option” for a limited time! 💥
If interested, please mention “ultra-revealing paper underwear” when booking!
Once your eyes meet Seira’s,
your sense of normalcy will quietly begin to collapse.
Her translucent skin and perfectly balanced half-Japanese features,
calm hair color, large eyes, and glossy lips—
just standing there, she brightens the space and seems to stop time itself.
Despite her petite body,
she is an incredibly bold and seductive tease.
Her devotion and sensuality captivate everyone who meets her.
Her sweet whispers, teasing fingertips,
and beautifully slender limbs will take control of you—
before you realize it, you’ll be lost between pleasure and restraint.
And above all, Seira’s charm lies in her personality as well.
Polite and attentive, her service is truly professional.
The gap between her playful, teasing nature and her sincerity
makes her a one-of-a-kind presence.
“Still want to climax? …Then hold it just a little longer ♡”
Fall into pleasure, and be consumed by the unforgettable “Seira experience.”
Wrapped in bliss, indulge in a seemingly endless, decadent moment to your heart’s content.
Her exciting video
Personal Experience
⭐ 4.8
Looks: 5 Play: 5 Price: 4 Staff: 5 Photos: 5
[About the Girl]
She was petite and cute at first glance, but once the play started, I was surprised at how tall she actually felt. Her legs were long, and she looked just like a model—truly beautiful. In a good way, she had a gap between her appearance and personality (lol).
[Price Satisfaction]
The price felt a bit high, but when I called in advance to consult about the booking, they kindly said, “We’ll include transportation for free just this time,” which made me feel like I got a great deal.
[Play Details]
I used the home service, and she immediately created a great atmosphere upon arrival, making everything flow smoothly. She reacted well to my responses, skillfully guiding me while also whispering sweet things, which made the experience even better. I felt completely in her control, yet at times gently teased—it turned into a truly amazing time.
[Staff Response]
The phone staff responded politely and accommodated my requests. It was my first time using home service, so I was a bit nervous, but they explained everything clearly, which made me feel at ease.
If this review inspired you and you’d love to meet amazing companions like Fuuka Futaba
, my consulting service for safe and enjoyable dating/escort experiences is a great place to start.
I’ll guide you through choosing the right venues and creating unforgettable moments — with safety, discretion, and fun in mind.
