---
title: "Kuromi Birthday Decorations — $281K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/kuromi-birthday-decorations"
last_updated: "2026-08-11T11:13:12.837Z"
locale: en
meta:
description: "Niche score 58/100 · $281K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 58/100 · $281K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Kuromi Birthday Decorations — $281K/yr Amazon US Niche (2026) - Flapen"
---
# **kuromi birthday decorations**
**Worth a look**
Shows a thin review moat (99 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 50Growth 18Conversion 41Competition 81Returns 81Price range 65Avg price 78Brand share 90Review moat 95Quality gap 24
**Review moat**
**Incredible****98.86**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Great****45%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****34%**
top-5 click share — an open shelf
**Returns**
**Great****1.7%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$16.10**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$6.66–$30.57**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$281K**
$281K/yr · 528K searches
**Conversion**
**Okay****3.3%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-13.5%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, kuromi birthday decorations is a $281K/yr Amazon United States market (528K searches/yr). The top 5 brands hold 45% of demand. Demand peaks in Sep. Verdict: Worth a look — 58/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kuromi birthday decorations market data**
- **Units sold / yr**
- **15K–20K**
- avg 250–500/product
- **Revenue / yr**
- **$242K–$322K**
- units × avg price
- **Conversion rate**
- **3.3%**
- **Avg BSR**
- **#3,307**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **64%**
- **Out of stock**
- **9.0%**
- **Avg brand age**
- **23 months**
- **Avg seller age**
- **150 days**
## **Competition & brand share**
Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.
**Brands**
**31 **▼falling
**Sellers**
**36**
**Top-5 brand share**
**45%**
Top 20: 88%
**Top-5 click share**
**34%**
Top 20: 77%
**Open market**
**50%**
- HANISNA14% - GOTOFUN10% - Offa-annysice9% - Signreen6% - AVONO6% - DIOSN5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -13.5% search growth over the last 90 days.
20K15KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep · busiest ÷ quietest = 2.2×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/kuromi-birthday-decorations/trend)
## **Top kuromi birthday decorations search terms**
- **kuromi birthday decorations**299K/yr-14.8%2.2% conv. - **kuromi party favors**38K/yr-8.0%2.1% conv. - **kuromi birthday**33K/yr-12.3%1.5% conv. - **kuromi balloons**31K/yr-6.0%2.5% conv. - **kuromi party decorations**26K/yr-19.0%2.1% conv. - **kuromi decorations**11K/yr+5.8%1.4% conv. - **my melody and kuromi birthday decorations**13K/yr-14.4%1.4% conv. - **kuromi balloon**10K/yr-0.7%2.0% conv. - **kuromi birthday party favors**7K/yr-10.1%2.7% conv. - **kuromi party**9K/yr-28.1%1.3% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/kuromi-birthday-decorations/search-terms)
## **Top kuromi birthday decorations products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%3%$8K6%$17K9%$25K12%$34K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**121Pieces Kuromi Birthday Party Decorations Kids Cute Cartoon Party Supplies Include Happy Birthday Banner Balloons Tablecloth Plates Cupcake Toppers for Girls Backdrop**HANISNA**$29.42**4.6★126 rev](https://www.amazon.com/dp/B0FNJDGRY5) [2**Kawaii Birthday Decorations Cute Party Favors Party Supplies Set Include Banner Foil Balloons Tablecloth Backdrop Cake Toppers Hanging Swirl for Girls**Offa-annysice**$17.38**4.9★67 rev](https://www.amazon.com/dp/B0F8QD6NGZ) [3**Kawaii Birthday Supplies Party Decorations Including Backdrop Birthday Banner Balloons Tablecloth Hanging Swirls Cake Toppers for Cute Party**GOTOFUN**$19.22**4.7★71 rev](https://www.amazon.com/dp/B0FF3ZW8R8) [4**52PCS-Kuromi Birthday Party Supplies Party Decorations Set Include Banner Balloons Hanging Swirls Cake Cupcake Toppers Tablecloth for Girls Kuromi Theme Party..**DIOSN**$16.22**4.6★26 rev](https://www.amazon.com/dp/B0GS1X2M8J) [5**Kawaii Birthday Party Supplies Kawaii Party Decorations Include Balloons Garland Arch Kit Latex Balloons Foil Balloons Backdrop Tablecloth Kawaii Birthday Party Favors**Signreen**$17.17**4.6★204 rev](https://www.amazon.com/dp/B0CB7QLXT8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Birthday Party Decorations Kit - Includes Banner Cupcake Toppers Cake Decorations Balloons Foil Balloons and Tablecloth for Kids Celebration**Offa-annysice**$14.95**0 rev4mo ago](https://www.amazon.com/dp/B0GRGT4Z1P) [**Kuromi Birthday Party Supplies Party Decorations Set Include Banner Backdrop Balloons Hanging Swirls Cake Cupcake Toppers Tablecloth for Girls Kuromi Theme Party**AVONO**$23.15**8 rev5mo ago](https://www.amazon.com/dp/B0GK1JFFVP) [**AVONO Kuromi Birthday Party Supplies Party Decorations Set Include Banner Balloons Hanging Swirls Cake Cupcake Toppers Tablecloth for Girls Kuromi Theme Party**AVONO**$19.16**14 rev5mo ago](https://www.amazon.com/dp/B0GK1HX7TL) [**Pink Purple Black Foil Fringe Curtains Birthday Decorations 2 Pack 3.2x6.6ft Kawaii Tinsel Backdrop Photo Booth Props Cute Anime Birthday Party Decorations Supplies Favors**FESTFINDS**$11.03**43 rev7mo ago](https://www.amazon.com/dp/B0G4C2DRMZ) [**MUSNOW 13Pack Kuromis Party Supplies 12pcs Hanging Swirls and 1 Happy Birthday Banner for Kuromis Party Decoration (Yellow-8)**MUSNOW**$11.67**9 rev8mo ago](https://www.amazon.com/dp/B0G37MNLP7)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Birthday Party Decorations Kit - Includes Banner Cupcake Toppers Cake Decorations Balloons Foil Balloons and Tablecloth for Kids Celebration**Offa-annysice**$14.95**0.0★**▲ 313%**](https://www.amazon.com/dp/B0GRGT4Z1P) [**HANISNA 52PCS Kuromi Birthday Party Supplies Party Decorations Set Include Banner Balloons Hanging Swirls Cake Cupcake Toppers Tablecloth for Girls Kuromi Theme Party.**HANISNA**$20.16**4.6★**▲ 305%**](https://www.amazon.com/dp/B0GK7Y7HX1) [**52PCS-Kuromi Birthday Party Supplies Party Decorations Set Include Banner Balloons Hanging Swirls Cake Cupcake Toppers Tablecloth for Girls Kuromi Theme Party..**DIOSN**$16.22**4.6★**▲ 181%**](https://www.amazon.com/dp/B0GS1X2M8J) [**ZelZeluna Large 3D Cartoon Number 7 Birthday Candles for Girls 5 & 2.76 Inches Purple Black Cake Toppers Animated Theme Birthday Decorations for Party Supplies (Number 7)**ZelZeluna**$7.36**4.8★**▲ 173%**](https://www.amazon.com/dp/B0FJ8VR273) [**MUSNOW 13Pack Kuromis Party Supplies 12pcs Hanging Swirls and 1 Happy Birthday Banner for Kuromis Party Decoration (Yellow-8)**MUSNOW**$11.67**4.8★**▲ 150%**](https://www.amazon.com/dp/B0G37MNLP7)
**~~View all trending →~~**
## **What buyers say about kuromi birthday decorations**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Best quality”*
**Value For Money**11%
*“Worth the buy”*
**Advertised Vs Actual Product**9%
*“Better than expected”*
**Color**9%
*“Cute colors”*
**Design-Overall**6%
*“The design is super cute and colorful, and my child loves using them every day”*
**Size-Overall**6%
*“True to size”*
**Durability**5%
*“hold up well”*
**Fun/Entertainment Experience**4%
*“Fun and easy”*
**Assembly/Installation**3%
*“Easy to assemble”*
**Ease Of Use**2%
*“They were easy to use”*
### **What buyers complain about **
**Size-Overall**15%
*“The tablecloth isnt wide enough for any of our tables”*
**Advertised Vs Actual Product**11%
*“Not as advertised”*
**Adhesion/Stickiness**10%
*“Didnt stick”*
**Inflation/Deflation**8%
*“Balloon slowly deflated extremely unsatisfied it was supposed to be for my daughters birthday”*
**Value For Money**8%
*“not a cent more”*
**Quality-Overall**7%
*“Cheap”*
**Smell**7%
*“The plates were open and vent, the banner had ink smeared all over it, the balloons smelled toxic”*
**Ease Of Use**4%
*“Could not use half the items”*
**Thickness**2%
*“They arent very thick”*
**Durability**2%
*“Then started to break apart”*
### **Top return reasons **
**Size-Overall**31%
**Advertised Vs Actual Product**16%
**Value For Money**16%
**Quality-Overall**5%
**Color**4%
**Product Condition**4%
**Defective Material/Parts**3%
**Adhesion/Stickiness**3%
**Inflation/Deflation**3%
**Feet Fit**2%
## **Common questions**
- **Is kuromi birthday decorations profitable to sell on Amazon United States?**
- The niche generates $281K/yr across 44 tracked products. 0 of 14 products launched in the last 360 days are still selling. 90-day search growth is -13.5%. Flapen's verdict: Worth a look (58/100).
- **How competitive is the kuromi birthday decorations niche?**
- 31 brands and 36 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 45% of demand.
- **What do buyers complain about in kuromi birthday decorations?**
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Adhesion/Stickiness. The return rate is 1.7%.
- **When does demand for kuromi birthday decorations peak?**
- Demand peaks in Sep; the busiest month runs 2.2× the quietest.
- **What does it cost to enter the kuromi birthday decorations niche?**
- Listings span $6.66–$30.57; the average listing price is $16.10 (sweet spot $15–$100). The average incumbent carries 99 reviews — the moat a new listing must climb.
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