Happiness Vol. 8

Name: Happiness Vol. 8
Price: 5.99 USD
Availability: InStock
Rating: 4.5 (639 reviews)
Author: Rie Aruga

by Rie Aruga

Manga Horror

4.5 (639)

4.5 stars from 639 reviews. Top 94% of Manga books we track.

$5.99Deal45% off peak

Last checked: Jul 20, 2026

Price history: $5.99 – $10.99

Buy now — this is the lowest price we've seen.

Price range: $5.99 – $10.99

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Fans of these authors will like this...

Junji Ito
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Chainsaw Man
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Perfect for you if...

You love psychological horror that doesn't flinch from depicting real suffering and moral compromise.
You're invested in watching broken characters claw toward redemption through increasingly dark means.
You appreciate manga that treats horror and character development with equal seriousness, not spectacle.

Maybe not for you if...

You need your protagonists to remain fundamentally good, even when they do terrible things.
You want straightforward wins and cathartic justice against villains.
You're looking for lighter horror or anything that lets you look away from the worst moments.

About this book

Sudo arrives to rescue Gosho from Sakurane's torture. Like others before him, Sudo underestimates the cult leader's monstrosity, leading to devastating consequences. During these events, Yuuki emerges from a catatonic state and faces a possible chance at redemption. However, defeating the monster may require becoming one, and despite everything, Yuuki remains fundamentally human.

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Price History

Kindle price over time. Green zones = periods when the book was free.

$5.99 – $10.99

Currently on sale at $5.99 — 45% off peak. Price has dropped 5 times over the last 5 years. Goes on sale roughly every 431 days. Typically stays discounted for 483 days.

Sales Rank

Amazon sales rank: lower number = better selling book. #1 is the bestseller.

Currently around #261K in the Kindle store — a niche title.

Rating & Reviews

Purple line = star rating over time. Blue area = total review count growth.

Currently 4.5★ from 639 reviews

Gaining approximately 8 new reviews per month. Rating has remained stable at 4.5 over the tracking period.

Sale Prediction

Actual Predicted

This book is currently discounted at $5.99. It typically returns to around $10.99.

Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.

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