Raku Vtuber PDP review

Seiraku Toys fully embraces Raku VT's identity with a custom-designed package.

The VTuber artwork covers nearly the entire tube, while the overall design follows the product's computer-virus theme from top to bottom.

The tube's design is directly inspired by the world of Raku VT, an independent VTuber known for her eccentric personality and cyberpunk aesthetic. The entire presentation revolves around hacking, digital viruses, system breaches, and fictional error messages.

The back of the packaging showcases the internal tunnel structure and key specifications. The different tunnel sections even feature themed names such as "Pop-Up Pucker Portal," "Core Login Lips," and "Virus Vortex Nodes."

Rather than feeling like a generic product with licensed artwork, the collaboration feels genuinely built around the character and her universe.

Once opened, Raku reveals a soft TPE sleeve housed inside a rigid tube that can be unscrewed from both ends.

The concept is simple:

• Mouth entrance on one side
• Vaginal entrance on the other
• Full 25 cm through-hole tunnel
• Removable sleeve
• Reusable rigid tube
  

During the first opening, two small foam cylinders are inserted into the tunnels. They likely help preserve the sleeve's shape during storage and transportation.

The sleeve can be completely removed for cleaning. However, some care is required. The TPE is extremely soft, and reinstalling the sleeve takes a bit of patience to avoid pinching or damaging the material.

An interesting bonus is that the Tantaly Daisy Plus insert fits perfectly inside the tube, offering some fun customization possibilities for users who already own compatible inserts.

The Tube Is More Than Just Packaging

Unlike some products where the outer shell is only used for storage, Raku's tube is an important part of the overall experience.

Its rigid structure effectively protects the TPE sleeve from deformation and external damage. Once stored, the material remains protected from dust, while any natural oil residue stays contained inside the tube instead of spreading onto surrounding objects.

The tube also improves grip during use and allows you to alter the tunnel's behavior simply by opening or closing one end.

While it remains compact compared to some of Seiraku Toys' larger products, it feels more like carrying a sports bottle than a tiny pocket-sized masturbator. This larger format provides excellent handling while still remaining easy to transport.

This is where Raku becomes particularly interesting.

The mouth tunnel looks relatively simple at first glance. However, the actual sensations are far more enjoyable than the visual design might suggest. The internal structure and the way the soft TPE compresses create a surprisingly pleasant vibrating sensation during movement.

The vaginal tunnel is more structured and textured. Its internal reliefs provide stronger stimulation throughout the entire stroke.

One of the most surprising aspects of the product is how much the tube itself influences the experience.

Using the Tube Closed

When the opposite end remains closed:

• 
  Strong air compression
  
• 
  Significant suction effect
  
• 
  Increased resistance during movement
  
• 
  More intense sensations
  

Using the Tube Open

When the opposite end is unscrewed:

• 
  Freer movement
  
• 
  More natural suction
  
• 
  Smoother strokes
  
• 
  Progressive pressure changes
  

A slight suction noise can sometimes occur during use. This is mainly caused by the TPE collapsing and expanding within the tunnel as air pressure changes.

The difference between the two configurations is noticeable enough that it almost feels like using two different setups within the same product.