😈 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: Fuuka Futaba
Age: 26
Measurements: T159 / 85 (F) / 56 / 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: Nursery teacher
Q: What kind of men turn you on?
A: Men who can’t hold back and lose themselves, climaxing over and over
Q: What kind of reactions from men excite you?
A: When they tremble and try to endure it—that’s what gets me the most
Q: What are you best at teasing?
A: Prostate, ears, penis♡ …and more♡
Q: What’s something a man said that made you happy?
A: “Being with you makes me feel so calm.”♡
Q: If the world were ending tomorrow, what would you do?
A: Climb to the top of a mountain and look down on the world and its people
Q: What would you like to be called?
A: Whatever you feel like calling me
Q: Lastly, a message to customers!
A: Please become material for my masturbation♡
Appeal Comment
A teacher who can lick👅 and touch🤏
Basic Available Plays
Soft…
Teasing / Roleplay / Face-sitting / Drool / Face & ear licking / Full-body licking / Blowjob / Oral finish / Skin-to-skin contact / Kissing / Light restraint / Feather-light glans teasing / Dry play / Footjob
Hard…
Prostate play / Verbal humiliation / M-slave play / Breathing & ejaculation control / Slapping / Human pet play / Whipping / Voyeur-style play / Choking / Master-servant play / Spanking / Full restraint / Service play / Forced cunnilingus / Cervix stimulation / Anal licking / Urine play / Continuous dry play / Light trampling
Paid Options
Cosplay (including bringing your own) ¥1,000 (tax included)
Police / Bikini / Leopard print / Nun / Uniform / “Virgin sweater” / Upper-body tights
¥1,000 (tax included)
- Low-temperature candle
- Chewing play (banana, chocolate, etc.)
- Food crushing
¥2,000 (tax included)
4. Strap-on
5. Take-home underwear👙
(Advance) Plenty of urine play ¥2,000 (tax included)
(Same day) Urine play ¥4,000 (tax included)
Adjusted to be odorless and tasteless
Free Options
Electric toys / Full nude / Restraints
X (formerly Twitter): @sakusei_Fuuka
Manager’s Comment
A perverted trainer who actually holds a nursery teaching qualification has joined us…!!
“Nursery teacher × Trainer”—just hearing it might sound extremely kinky.
And just as it sounds, Fuuka is indeed a pervert.
To our gentlemen… no… to our “children”…
Through her “nurturing” play, she excels at literally “bringing you under control.”
At first glance, she has short hair and a youthful face, but her eyes leave a strong impression—eyes that capture and never let go of people… and things.
Gently and slowly, yet sometimes playfully, she toys with her “children,” revealing her natural talent as a trainer.
With just a word or a gesture, she melts away your embarrassment and reason… her skill is nothing short of art.
“Will you be gently and sweetly dominated…?”
“Or simply fall into pleasure and be consumed by desire…?”
“It feels good… doesn’t it…♡”
“Yes… just like that… see…?”
Can you return after hearing Fuuka-sensei’s whispers…?
Sweetly, quietly, deeply…
Please fully indulge in Fuuka’s uniquely “trained” style of nurturing.
Her exciting video
Personal Experience
⭐ 4.6
Looks: 4.5 Play: 5 Price: 4.5 Staff:4.5 Photos:4.5
A Must-Visit for Roleplay Enthusiasts: An Unforgettable Experience with Fuka
I became interested in image play (roleplay) after seeing her photo diary and decided to request Fuka-san.
Right from the initial consultation, she was incredibly thorough in understanding the direction I wanted to take. Even during that talk, it felt like the play had already begun; her gentle, yet teasing words kept me on the edge of my seat with anticipation.
When the session actually started, she perfectly captured the scenario we discussed. The level of satisfaction was far beyond what I had imagined. Although I requested a slightly harder-style play, the gap between her gentle consultation and her performance during the session completely captivated me. Her skills are beyond reproach—she led me to a climax in no time. Afterward, she treated me with the same kindness as before, making me feel incredibly cared for.
While the pricing is a bit higher compared to other shops in the industry, considering the quality of the service, the cast, and the professional staff, it feels more than reasonable—it almost feels like a bargain.
I highly recommend her to anyone who loves high-quality, immersive roleplay!
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.
