Rank: C

• Uncomfortable
• Hard
• High stimulation
• Ugly exterior

I've used it 3 times. Don't really care to use it further...
OnahoDouga review with pictures, video, and cutaway
Purchased early 2026 from ToyDemon for $32.95

Exterior

It's small (not in length, but thickness) and ugly looking.

It has a concave opening, which is helpful (easier to re-insert after popping out).

The material isn't pleasant to touch, and it has a grippy texture on the outside which I guess might be practical, but I think it's anti-alluring.

Interior

I was super excited for this one, but unfortunately it was very disappointing. I often struggle to distinguish textures, but I always love how it feels to push into a toy's opening, so I've been interested in uterus gimmicks (somehow, I have yet to order an actual uterus toy). I hoped this toy would feel like pushing past/into a bunch of things, like constantly pushing into a hole's opening, but it didn't, really.

It's uncomfortable. Not pleasurable. Not painful. Just uncomfortable.

I felt fleeting, mild sensations of pushing into/past stuff. A stronger feeling was of little nubs poking into the sides of my shaft; if a typical toy is someone stroking your dick with a full closed palm, then this is someone stroking your dick with their fingertips pressing hard into your sides.

It feels like sticking my dick into a bunch of assorted plastic scrap. Which, I mean, you know, thermoplastic elastomer, it is plastic, that's what these are, but most toys don't feel like it; this did. This felt like putting my dick into plastic. I had three orgasms with it over my first 1-2 sessions, they were all weak, and the journey to reach them was bleh.

In fact, after I used it my dick kinda hurt. Not in a "my dick got bullied! oh nooo, uwu! :3" way but like, my urethra was mildly uncomfortable. However, this didn't happen on my 3rd usage so I think it purely was my own fault — I fell asleep with my dick inside the toy the session before this happened. Sooo yeah that was probably it. But for what it's worth I sometimes pass out after using other toys as well, with my dick still inside them as I sleep, and none others have caused discomfort.

The third time I used it, which was kind the last chance I was giving it, it was still uncomfortable stroking, although not as much as the first two times. When I moved into a different position and began thrusting into it from above, it finally felt pleasurable, and I enjoyed the high stimulation from the nubs in this position.

But... not better than the pleasure I can get from other toys, and my other toys aren't uncomfortable in all but a few positions.

Scent

No scent.

Sound

It's very loud! But not in an fun way.

I have other toys that are loud, but make sounds that are lewd and arousing. This toy is just loud, and unerotic.

Misc

For cleaning/drying, I decided to turn it inside out (because I didn't care much about the toy's durability). It was easy enough, no insta-tears or anything.

Durability

Should be robust. It's a harder material, low oil.
No imperfections out of the box.
After 3 uses, a couple internal nubs are deteriorating a little bit, but I've been turning it inside out, so that's probably on me.

Comparison to Shark Girl

Compared to the Umi No Ana 2 Carnivorous Mermaid ("shark girl"):

• Similar size
• Similar hardness
• The shark girl has a nicer material (feels better to hold/touch)
• The shark girl has way better aesthetics (semi-transparent, nice color)
• The shark girl is more pleasurable, and not at all uncomfortable
• The shark girl has better textures
• The shark girl is also loud, but with lewder sounds.

While using the Kunoichi, I kept wishing I had the shark girl on my dick instead.

Overall

If the Kunoichi Invitation was the only toy I had, I'd use it. And it's possible that with time, breaking it in, or learning the best angles/lube combination, maybe I could come to figure it out more.

But it's not. I have a lot of other toys.
And my other toys are never uncomfortable, and aren't so ugly.

I don't see myself using this, and I put it into the back of my closet.
Maybe I'll give it a try every 6 months or so, just to see if my thoughts change.

But after leaving it in a closet for 6 months...
Maybe an insect will have made a home out of it, when I pull it out...
That's okay...
It adds to the texture, so...
And if it's a wasp, it's extra stimulation...