Hello everyone, I’m Ajian. I’m thrilled to have the chance to review another ToysHeart masterpiece. The “Alchemist,” released in 2019, features the beloved Isekai (fantasy world) theme. It is a globally acclaimed male masturbator, notable for being ToysHeart’s first foray into high-vacuum channel design.
As a fan of “reincarnation” themed anime, I’ll be your “Otherworld Auditor” today. I’m going all out to explore every detail of this “Juicing Relic.”
1. Packaging and Material Details
External Packaging:
The packaging is exceptionally well-crafted, designed like a grimoire or magic book. The cover illustration features Atelier, the alchemist girl, sitting in her laboratory. Her bright blonde braids and innocent face create an ethereal, pure aesthetic for this fantasy-themed session.
Upon opening, the back flap reveals the lore:
In a future magic world, a sudden mutation caused the Y-chromosome count to plummet. With a severe shortage of men, humanity faced extinction. To restore prosperity, the alchemist Atelier set out on a journey to collect human “essence.” However, artificial life experiments had never succeeded. Atelier took a different path, starting the experiment with her own body…
Every inch of the packaging is utilized to immerse you in the Isekai world: rare herbs, magic ores, natural elements, and Atelier’s personal bio. The attention to detail makes this feel like a true collector’s item.
Contents:
The inner box (second from left) contains a 12ml sachet of lubricant and a drying stick (second from right).
The unit measures 15cm in length and 7cm in width, with an internal channel of 13.5cm—making it a relatively compact toy. The exterior is understated, with a simple entry design featuring basic anatomical folds and a circular opening. A slight seam line is visible due to the molding process. The material is a firmer, high-quality version of the standard ToysHeart TPE, offering a smooth and secure grip.
While the exterior is simple, typical for vacuum-focused cups, the real magic happens inside. It’s time for Ajian Reviews to “deeply” explore her inner world.
2. Detailed Channel Structure Analysis
The internal structure is divided into three distinct segments: the entry guarded by four “Elemental Orbs,” a narrow and highly stimulating mid-section, and a final chamber designed for that “breakthrough” sensation and maximum vacuum.
In practice, the pleasure originates mainly from the mid-section. The frontal orbs act primarily to grip the base of the shaft, providing a snug wrap. The textured particles at the far end are very stimulating, but their primary function is to facilitate that powerful vacuum suction.
Using the displacement method, I measured the internal volume. Despite having only a 13.5cm channel, the internal volume reaches a staggering 60ml. To put this in perspective for Ajian Reviews readers, the legendary R20 (Gen 1) “Juicer” has a 16.5cm channel but only holds 45ml of volume.
Most standard masturbators only hold about 10ml. The volume directly translates to vacuum strength—the 60ml capacity is truly in a league of its own for suction intensity.
Despite the volume, about 7ml of lubricant is sufficient since the interior compresses during use. I recommend laying the cup flat when adding lube to keep it in the mid-section; vertical lubrication allows too much to flow into the rear chamber, reducing efficiency.
Exhaust Technique: After adding lube, compress the cup from the rear until the lubricant is near the entrance, then insert. For this model, I actually don’t recommend a 100% vacuum seal. The suction is so intense that moving can become difficult, and a fully flattened rear chamber can hinder the “cervix” breakthrough sensation. In my experience, exhausting about 70% of the air provides the most intense, pleasurable stimulation. Remember to press the front after insertion to move any trapped air to the rear, ensuring a tight wrap at the base.
3. Technical Performance Metrics
- Realism: ★★ (Sacrificed for vacuum efficiency)
- Odor Level: ★★★★★ (Almost odorless)
- Oiliness: ★★★★★ (Dry, high-quality material)
- Durability: ★★★★ (Very resilient)
- Cleaning Ease: ★★★★ (Can be inverted, but simple rinsing is enough)
- Stimulation: ★★★★★ (Hardcore suction/juicing)
- Softness: ★★ (Firm material, low elasticity)
- Value: ★★★ (Made in Japan, premium pricing)
- Overall Experience: ★★★★ (Intense and unique)
4. The Sensory Experience
I received this package during a holiday break. Even though I had already had a “session” earlier that day, the Alchemist proved its worth. Vacuum-style “Juicing” toys have a unique magic: even during a refractory period or when feeling depleted, the powerful vacuum suction forces your member to “stand at attention” and reignites your vitality.
The term “Juicer” is literal here. Once you enter the vacuum, you are locked in for a high-intensity ride. For any connoisseur looking to push their limits, this toy offers a significant challenge to your endurance.
5. Overall Verdict and Recommendations
The combination of delicate internal textures and massive vacuum suction is incredible. What surprised me most was the adjustable range of suction; by controlling the air exhaust, you can tailor the intensity to suit your preference. It’s a design rarely seen even from vacuum leaders like TENGA.
The main drawback for me is the length. With a 13.5cm total channel and vacuum chambers at both ends, the effective stimulation area is relatively short. During the “climax sprint,” it’s easy to bottom out, which can slightly disrupt the flow. I’d love to see a “Mature Alchemist” version in the future with a longer channel.
Additionally, it is a bit pricey for its size, and the original “Herbal Lube” is no longer included. If you are strictly looking for the absolute best vacuum effect, hard-shell toys like TENGA still have a slight edge in structural support.
Pros:
- Stunning, immersive packaging art.
- Extreme vacuum suction with a wide range of adjustability.
Cons:
- The high-stimulation zone is relatively short.
- Higher price point for the size.
Ajian Reviews Final Score: 80/100 (4-Star Recommendation)
That concludes our trip to the Alchemist’s lab. See you in the next review!