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Kuu-Sou 4 Line

Brand:  G Project

Four fierce ridges, one slinky fantasy that won’t let go 

Step into pure fantasy with Kuu-Sou 4 Line, a vaginal onahole engineered to feel like the girl you’ve never met in reality—tight, slick, and eager to squeeze. The rounded entrance slips open with a silky glide, then four thick, wavy vertical ridges close around you, gripping the shaft from every angle as they twist and undulate with each stroke. The canal stays straight for powerful thrusts, yet the internal lines keep shifting pressure so sensation never goes flat. 

A single-layer TPE body delivers a supple, uniform ride; it bends and stretches in your hand while those deep ridges stay bold and defined inside. The closed end builds a natural vacuum that tugs you deeper on the pull and urges a heavier return, turning slow, deliberate strokes into a simmering climb and fast drives into a fierce, breathless finish. Add water-based lube and let this male masturbator’s four-line embrace do the rest.

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  • Brand
  • Simulation
  • Number of Holes
  • Construction
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Brand: G PROJECT
Simulation: Vaginal
Number of Holes: 1 Hole
Construction: Dual Layer

Product Breakdown

Get an in-depth look at the features, materials, and sensations that make this product a standout. Everything you need to know before you dive in.

Simulating: Vaginal
Material Construction: Single Layer
Product Type: Onahole / Male Masturbator / Pocket Pussy
Usability: Reusable
Product Weight: 440g
Product Size: 170 x 60 x 60mm
Hole Type: Closed
Penetrable Holes: 1
Lotion Sample Included: Yes (5ml)
Based on: Fantasy catgirl (kemonomimi) theme
Country of Origin: Japan

  • Four oversized vertical ridges for full-contact, twisting squeeze
  • Straight canal for powerful thrusts with dynamic internal pressure
  • Soft entrance ring that seals fast for immediate glide
  • Natural suction from a closed end for a deeper pull
  • Single-layer TPE for a uniform, supple hand feel
  • momochi skin blend that becomes more accommodating with use
  • Compact, stretch-friendly body for precise angle control
  • Great for twist play, edging, and slow-to-hard transitions
  • Reusable design with simple warm-water cleaning
  • Includes 5ml lubricant sachet
Kuu-Sou 4 Line

Four fierce ridges, one slinky fantasy that won’t let go

The Kuu-Sou concept is simple: recreate sensations that don’t exist in everyday life. Kuu-Sou 4 Line pushes that promise with a canal mapped by four oversized, sinuous ridges that never stop working you. Insertion is smooth through a soft entrance ring that sets a quick seal. Just inside, the vertical lines rise to meet you; as you thrust, they bend and ride the skin, alternately pinching, rolling, and lifting along the frenulum and shaft. Because they’re spaced in a cross pattern, at least two are always on you—so contact feels continuous, even when you slow down.

The straight tunnel invites harder, deeper strokes, but the texture keeps the experience dynamic: one moment you’re gliding, the next the ridges are wringing you with a deliberate squeeze. Between passes, micro undulations in the walls reset your nerves without scraping. The closed-hole design traps air and lubricant, creating a vacuum that intensifies on withdrawal; each pull tightens the seal, then the sleeve answers with a deeper draw that tempts you to sink back in. Crafted in Hatopla’s momochi skin blend, the single-layer body is plush to the touch and becomes more accommodating with repeated use, while preserving crisp internal definition.

Control is effortless. The compact chassis sits steady for one-handed rhythm, micro-rotations that send the four lines spiraling over fresh zones, or two-handed squeezes that amplify the hug without losing glide. Cleanup is straightforward: warm water, mild soap, dry completely. If you want a pocket pussy that blends fantasy styling with assertive, ridge-driven stimulation, Kuu-Sou 4 Line delivers a locked-in ride and a finish that hits with intention.

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