---
title: "Jujutsu Kaisen Birthday Decorations — $83K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/jujutsu-kaisen-birthday-decorations"
last_updated: "2026-08-11T07:34:16.556Z"
locale: en
meta:
description: "Niche score 57/100 · $83K/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 57/100 · $83K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Jujutsu Kaisen Birthday Decorations — $83K/yr Amazon US Niche (2026) - Flapen"
---
# **jujutsu kaisen birthday decorations**
**Worth a look**
Shows a thin review moat (33 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 21Growth 50Conversion 49Competition 75Returns 92Price range 66Avg price 81Brand share 53Review moat 98Quality gap 30
**Review moat**
**Incredible****32.68**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Great****1.1%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$17.58**
avg listing price — sweet spot $15–$100
**Competition**
**Great****40%**
top-5 click share — an open shelf
**Price range**
**Good****$5.81–$32.74**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****73%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+19.9%**
90-day search growth — must beat 0% to launch
**Conversion**
**Okay****3.9%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$83K**
$83K/yr · 122K searches
**Signals**[** 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, jujutsu kaisen birthday decorations is a $83K/yr Amazon United States market (122K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in May. Verdict: Worth a look — 57/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **jujutsu kaisen birthday decorations market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$53K–$70K**
- units × avg price
- **Conversion rate**
- **3.9%**
- **Avg BSR**
- **#3,439**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **29%**
- **Out of stock**
- **4.8%**
- **Avg brand age**
- **22 months**
- **Avg seller age**
- **167 days**
## **Competition & brand share**
Clicks spread well past the top 5 (40% combined) — an open shelf where new products get seen.
**Brands**
**15 **▲rising
**Sellers**
**18**
**Top-5 brand share**
**73%**
Top 20: 100%
**Top-5 click share**
**40%**
Top 20: 89%
**Open market**
**21%**
- Generic30% - Ezcpigei19% - Kuailaihai10% - Magsamson8% - karg6% - ELZEM5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +19.9% search growth over the last 90 days.
4K3KSpike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May · busiest ÷ quietest = 2.2×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/jujutsu-kaisen-birthday-decorations/trend)
## **Top jujutsu kaisen birthday decorations search terms**
- **jujutsu kaisen birthday decorations**51K/yr+22.3%3.1% conv. - **jjk birthday decorations**19K/yr+26.1%2.1% conv. - **jujutsu kaisen party decorations**14K/yr+23.6%3.0% conv. - **jujutsu kaisen birthday**13K/yr+11.3%1.9% conv. - **jujutsu kaisen cake topper**11K/yr+8.0%2.8% conv. - **gojo birthday decorations**9K/yr+17.5%2.8% conv. - **jjk party decorations**5K/yr+13.9%2.9% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/jujutsu-kaisen-birthday-decorations/search-terms)
## **Top jujutsu kaisen 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%$2K6%$5K9%$7K12%$10K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**animation Jujutsu theme birthday decorations Kaisen party supplies Including: banners Balloon background cake toppers.**Generic**$24.07**3.9★7 rev](https://www.amazon.com/dp/B0GWKP6F23) [2**Jujutsu Manga Kaisen Birthday Party Supplies including Cake Topper Cupcake Toppers Banner Latex Balloons It is Very Suitable for Boys and Girl Anime Themed Birthday Party Supplies. Black**Ezcpigei**$23.57**4.3★73 rev](https://www.amazon.com/dp/B0F1DXNQL5) [3**Anime Birthday Party Decoration Include Satoru Happy Birthday Banner Cake Topper Latex Balloons for Jujutsu Fans Party Supplies**Magsamson**$20.39**4.4★8 rev](https://www.amazon.com/dp/B0G8J8FPJZ) [4**Jujutsu Anime Kaisen Birthday Backdrop Poster for Jujutsu Anime Kaisen Theme Party Decorations Anime Birthday Supplies Background Studio Shoot Photo Props**Generic**$19.25**4.1★9 rev](https://www.amazon.com/dp/B0GGGFPN3H) [5**Jujutsu Anime Kaisen Birthday Backdrop Poster for Jujutsu Anime Kaisen Theme Party Decorations Anime Birthday Supplies Background Studio Shoot Photo Props**Generic**$14.36**5.0★8 rev](https://www.amazon.com/dp/B0GGJ8V884)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Cartoon For Jujutsu Manga Kaisen Birthday Party Supplies Set Birthday Decorations Set Include Banner Balloons Hanging Swirls Cake Cupcake Toppers for Boys Girls Party.**EKIH**$19.97**3 rev3mo ago](https://www.amazon.com/dp/B0GXS25H2S) [**animation Jujutsu theme birthday decorations Kaisen party supplies Including: banners Balloon background cake toppers.**Generic**$24.07**7 rev3mo ago](https://www.amazon.com/dp/B0GWKP6F23) [**Jujutsu Manga Kaisen Birthday Party Decorations Banner Backdrop Jujutsu Manga Kaisen Themed Banner Party Supplies for Kids Fans Happy Birthday Photography Background Wall Decor**Ezcpigei**$14.04**1 rev4mo ago](https://www.amazon.com/dp/B0GTGXVFM9) [**Get Trend Jujutsu Kaisen Boys T Shirts 2 Pack Short Sleeve Tops Kids Crewneck Breathable Graphic Tees Anime Gifts for Boys (15-16 Years Black/Purple Jujutsu Kaisen)**Get Trend**$26.06**53 rev4mo ago](https://www.amazon.com/dp/B0FVFDNJ9H) [**2Pcs Cartoon For Jujutsu Manga Kaisen Birthday Porch Sign Door Hanging Banner Cartoon Birthday Party Supplies for Wall Decorations.**Kuailaihai**$15.85**6 rev6mo ago](https://www.amazon.com/dp/B0GGNMN62K)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Jujutsu Manga Kaisen Party Supplies Anime Birthday Party Decoration Anime Includes Cake Toppers Cupcake Toppers Balloons Banner Party Supplies Decoration For Adults Boys Girls Teens**picidae**$13.85**5.0★**▲ 131%**](https://www.amazon.com/dp/B0GTKTW7SD) [**animation Jujutsu theme birthday decorations Kaisen party supplies Including: banners Balloon background cake toppers.**Generic**$24.07**3.9★**▲ 130%**](https://www.amazon.com/dp/B0GWKP6F23) [**Cartoon For Jujutsu Manga Kaisen Birthday Party Supplies Set Birthday Decorations Set Include Banner Balloons Hanging Swirls Cake Cupcake Toppers for Boys Girls Party.**EKIH**$19.97**4.3★**▲ 130%**](https://www.amazon.com/dp/B0GXS25H2S) [**Jujutsu Manga Kaisen Birthday Party Decorations Banner Backdrop Jujutsu Manga Kaisen Themed Banner Party Supplies for Kids Fans Happy Birthday Photography Background Wall Decor**Ezcpigei**$14.04**5.0★**▲ 129%**](https://www.amazon.com/dp/B0GTGXVFM9) [**Get Trend Jujutsu Kaisen Boys T Shirts 2 Pack Short Sleeve Tops Kids Crewneck Breathable Graphic Tees Anime Gifts for Boys (15-16 Years Black/Purple Jujutsu Kaisen)**Get Trend**$26.06**4.4★**▲ 126%**](https://www.amazon.com/dp/B0FVFDNJ9H)
**~~View all trending →~~**
## **What buyers say about jujutsu kaisen birthday decorations**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**29%
*“Great kit easy to use looked amazing”*
**Value For Money**11%
*“Great value”*
**Advertised Vs Actual Product**8%
*“Exactly as described, thank you”*
**Fun/Entertainment Experience**8%
*“Very kids friendly”*
**Size-Overall**5%
*“Size is perfect”*
**Color**4%
*“The colors are bright”*
**Design-Overall**4%
*“The designs looked great”*
**Gifting Purpose**4%
*“Great for decorating”*
**Durability**4%
*“I was pleasantly surprised by the durability”*
**Material Quality**3%
*“The backdrop is nice material”*
### **What buyers complain about **
**Quality-Overall**28%
*“Not the highest quality set”*
**Size-Overall**17%
*“They are so small”*
**Smell**8%
*“The biggest thing to be aware of is the intense chemical odor that hits you as soon as you open the package”*
**Assembly/Installation**6%
*“Patience is needed putting this together”*
**Advertised Vs Actual Product**4%
*“up close you can tell its not premium artwork”*
**Thickness**3%
*“When I got it I didn't realize how thick it was”*
**Adhesion/Stickiness**2%
*“The sticky papers for the bottom of the table ones came apart”*
### **Top return reasons **
**Size-Overall**31%
**Advertised Vs Actual Product**16%
**Value For Money**12%
**Quality-Overall**9%
**Color**5%
**Print Quality**5%
**Material Quality**4%
**Product Condition**2%
**Defective Material/Parts**2%
**Strength**2%
## **Common questions**
- **Is jujutsu kaisen birthday decorations profitable to sell on Amazon United States?**
- The niche generates $83K/yr across 34 tracked products. 3 of 22 products launched in the last 360 days are still selling. 90-day search growth is +19.9%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the jujutsu kaisen birthday decorations niche?**
- 15 brands and 18 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 73% of demand.
- **What do buyers complain about in jujutsu kaisen birthday decorations?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Smell. The return rate is 1.1%.
- **When does demand for jujutsu kaisen birthday decorations peak?**
- Demand peaks in May; the busiest month runs 2.2× the quietest.
- **What does it cost to enter the jujutsu kaisen birthday decorations niche?**
- Listings span $5.81–$32.74; the average listing price is $17.58 (sweet spot $15–$100). The average incumbent carries 33 reviews — the moat a new listing must climb.
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