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Fantasy, Horror & Science Fiction (Japanese, Kindle eBooks): Amazon KDP category data

Amazon Kindle eBooks Best Sellers data for Fantasy, Horror & Science Fiction (Japanese, Kindle eBooks), updated Nov 3, 2026: median price $3.21, median 8 reviews, average rating 4.2 and a KDPTop opportunity score of 18/100 (highly competitive).

18Opportunity / 100
$3.21Median price
8Median reviews
Price range (middle 50%)$2.99 – $4.43
Average rating4.2
New releases (90 days)12%
Books on the list100
StoreKindle eBooks

What stands out

  • At $3.21 its median price is below 97% of Kindle eBooks categories, so it is a volume game.
  • Its median reviews are 40% of the parent category Japanese (20), one of the easier corners under it.
  • Its review barrier is lower than in 84% of Kindle eBooks categories: the median best seller has only 8 reviews, so new books can chart with few.

Top 10 Fantasy, Horror & Science Fiction best sellers

  1. ハリー・ポッターと賢者の石: Harry Potter and the Philosopher's Stone ハリー・ポッタ (Harry Potter) (Japanese E book cover by J.K. Rowling

    ハリー・ポッターと賢者の石: Harry Potter and the Philosopher's Stone ハリー・ポッタ (Harry Potter) (Japanese Edition)

    by J.K. Rowling

    • List rank#1
    • Price$11.99
    • Rating4.7
    • Reviews3,106

    View on Amazon · Full data on KDPTop

  2. I love my mom (Japanese Edition) book cover by Lu

    I love my mom (Japanese Edition)

    by Lu

    • List rank#2
    • Price$8
    • Rating4.5
    • Reviews79

    View on Amazon · Full data on KDPTop

  3. ハリー・ポッターと秘密の部屋: Harry Potter and the Chamber of Secrets ハリー・ポッタ (Harry Potter) (Japanese E book cover by J.K. Rowling

    ハリー・ポッターと秘密の部屋: Harry Potter and the Chamber of Secrets ハリー・ポッタ (Harry Potter) (Japanese Edition)

    by J.K. Rowling

    • List rank#3
    • Price$11.99
    • Rating4.7
    • Reviews1,909

    View on Amazon · Full data on KDPTop

  4. JLPT N3 Nihongodeyomu Aladdin and the Enchanted Lamp arazintohushiginarampu in Japanese fo book cover by Miwa

    JLPT N3 Nihongodeyomu Aladdin and the Enchanted Lamp arazintohushiginarampu in Japanese for Intermediate Learners Sekai no Mukashibanasi Old tale of the world in Japanese (Japanese Edition)

    by Miwa

    • List rank#4
    • Price$2.99
    • Rating5.0
    • Reviews2

    View on Amazon · Full data on KDPTop

  5. Nigeta Komochi Omega Wa Reikoku Na Ryujin Otaishi Ni Himitsu No Musuko Goto Torimodosarema book cover by Hoshino Ame

    Nigeta Komochi Omega Wa Reikoku Na Ryujin Otaishi Ni Himitsu No Musuko Goto Torimodosaremashita: Rokunen Mae Ni Suterareta Hazu Ga Ogon No Tsubasa O Motsu ... (Luminasu Bunko) (Japanese Edition)

    by Hoshino Ame

    • List rank#5
    • Price$4.27
    • Rating3.4
    • Reviews21

    View on Amazon · Full data on KDPTop

  6. Akuyaku Kizoku ha Souseiji Game Sekai Tennsei Henn: Jikka Botsuraku Hissori Mobuyaku Akuya book cover by Novpracd

    Akuyaku Kizoku ha Souseiji Game Sekai Tennsei Henn: Jikka Botsuraku Hissori Mobuyaku Akuyaku Kizoku Series (Finnasia Bunko) (Japanese Edition)

    by Novpracd

    • List rank#6
    • Price$2.99
    • Rating4.2
    • Reviews311

    View on Amazon · Full data on KDPTop

  7. AI different world fantasy: Scenery (Japanese Edition) book cover by AI tour guard

    AI different world fantasy: Scenery (Japanese Edition)

    by AI tour guard

    • List rank#7
    • Price$5.99
    • Rating4.2
    • Reviews4

    View on Amazon · Full data on KDPTop

  8. AI different world fantasy: Scenery vol3 (Japanese Edition) book cover by AI tour guard

    AI different world fantasy: Scenery vol3 (Japanese Edition)

    by AI tour guard

    • List rank#8
    • Price$3.99
    • Rating4.0
    • Reviews2

    View on Amazon · Full data on KDPTop

  9. Desutorappu Danjon o Ikinokotta Kusogema UR Jashin ni Natsukarete Isekai Suro Raifu o Haji book cover by Fruits Sennin

    Desutorappu Danjon o Ikinokotta Kusogema UR Jashin ni Natsukarete Isekai Suro Raifu o Hajimemasu 1 DESTRAP DUNGEON SLOW LIFE (Fruits Bunko) (Japanese Edition)

    by Fruits Sennin

    • List rank#9
    • Price$4.30
    • Rating4.8
    • Reviews20

    View on Amazon · Full data on KDPTop

  10. ハリー・ポッターと不死鳥の騎士団 ハリー・ポッタ (Harry Potter) (Japanese Edition) book cover by J.K. Rowling

    ハリー・ポッターと不死鳥の騎士団 ハリー・ポッタ (Harry Potter) (Japanese Edition)

    by J.K. Rowling

    • List rank#10
    • Price$11.99
    • Rating4.7
    • Reviews1,063

    View on Amazon · Full data on KDPTop

FAQ

Is Fantasy, Horror & Science Fiction a good niche for Amazon KDP?

Its KDPTop opportunity score is 18/100, which makes it highly competitive. The median best seller has 8 reviews and sells for $3.21.

How many reviews do you need to rank in Fantasy, Horror & Science Fiction?

The median best seller has 8 reviews, and 69% of them have fewer than 100.

What do Fantasy, Horror & Science Fiction best sellers cost?

The median price is $3.21; half of the best sellers are priced between $2.99 and $4.43.

Can new books break into Fantasy, Horror & Science Fiction?

12% of the current best sellers were released in the last 90 days.

About this data

Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.