Juice=Juice Gets Featured in a Business Book — 5ch Fans Are Split on What It Means

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The story

Juice=Juice being featured in Yume Mochizuki’s new book “Idols as Business Literacy” (Diamond Inc.) has become a hot topic on 5ch’s Hello! Project board. Mochizuki — a former Dentsu Digital employee also known as founder of the idol unit “Natsumezaka” — has mostly built his analyses around Sakamichi-group idols and has rarely covered Hello! Project. On the thread, reactions to the book’s price and thickness, and to his breakdown of traits shared by flop songs like “Vanilla Vanilla,” mixed with suspicion about the author’s biased viewpoint and his motives for covering the group — delight and wariness voiced side by side.

Yume Mochizuki

“Idols as Business Literacy”

Diamond Inc.

Source: hanmoto.com / Original listing here

What people said

2AnonymousOct 6, 2026 23:21
Juice is AMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAZING
3AnonymousOct 6, 2026 23:21
・Still selling out: the "Bus Tour Full of Old Guys"
4AnonymousOct 6, 2026 23:23
Pretty thick book for how cheap it is
5AnonymousOct 6, 2026 23:26
Does "not cannibalizing" have something to do with a taste for human flesh?
6AnonymousOct 6, 2026 23:27
Does "cannibalize" mean literally eating each other?
7AnonymousOct 6, 2026 23:27
The Sakamichi groups totally cannibalize each other's fanbase though
8AnonymousOct 6, 2026 23:28
Had the impression this guy stubbornly ignored Hello! Project and only covered borderline topics, but I guess he's finally started covering the ones that are "glowing" (slang for looking great/doing well)?
9AnonymousOct 6, 2026 23:30
Check the table of contents — Hello! Project isn't even in there
10AnonymousOct 6, 2026 23:31
Oh, it's coming out through Diamond Inc.?
12AnonymousOct 6, 2026 23:31
This guy's the founder of the idol unit Natsumezaka, right? He was originally a Sakamichi-group devotee
13AnonymousOct 6, 2026 23:33
Re: #1
Yeah, exactly
Offshore = Company, huh (riffing on the Juice=Juice naming pattern)
15AnonymousOct 6, 2026 23:35
Who's Eguchi Manami?
16AnonymousOct 6, 2026 23:36
So who's actually buying this thing?
17AnonymousOct 6, 2026 23:37
This guy's no good — he writes articles by cherry-picking biased data to fit a conclusion he already decided on
18AnonymousOct 6, 2026 23:38
Does anyone actually read
this guy's stuff?
22AnonymousOct 6, 2026 23:49
People who actually know Hello! Project already put out thick books —
a Naoki Prize-winning author, and a writer who swept four awards in the UK
28AnonymousOct 7, 2026 00:54
Re: #22
Who won four awards in the UK?
23AnonymousOct 6, 2026 23:51
The gist of it is basically "they just got lucky with the song gacha" (gacha = lottery/loot-box slang, i.e. a lucky hit)
24AnonymousOct 7, 2026 00:18
I can only assume he had AI write this
26AnonymousOct 7, 2026 00:47
Re: #24
All of this guy's tweets read like that
Nothing but irritating
He only looks at numbers and strategy, so he only wants to talk about the big agencies — boring
25AnonymousOct 7, 2026 00:34
Trying to get otaku from every fandom corner to buy it, huh
27AnonymousOct 7, 2026 00:51
Didn't "Kizoku-san" put out a book too?
29AnonymousOct 7, 2026 00:56
This guy's an ex-Dentsu Digital employee, right? He's even contributed to Bessatsu Kadokawa SCENE17, which had Juice=Juice on the cover. He flat-out ignored them from his Dentsu days until now — what gives?! 😲💦
43AnonymousOct 7, 2026 01:25
Re: #29
Guess once the numbers get big enough, he can't ignore them anymore
30AnonymousOct 7, 2026 01:02
He probably just likes Juice=Juice
(I say that as a Hello! Project hater, but still)
31AnonymousOct 7, 2026 01:04
Don't tell me he's a new fan who got hooked by how great Manami looks?! ("盛れミ" — fan slang combining 盛れ/"looking great" with Eguchi Manami's name)
50AnonymousOct 7, 2026 01:31
・"Vanilla Vanilla"… 6 Traits of Songs That Flop
61AnonymousOct 7, 2026 01:44
He's an idol-business analyst guy, so of course he's going to ignore idols who aren't making money

Background and Key Points of This Topic

Yume Mochizuki is known for discussing idols through a numbers-and-business lens, and given his background as founder of the idol unit “Natsumezaka” and former Dentsu Digital employee, the thread noted that his analyses have mostly centered on Sakamichi-group idols with little coverage of Hello! Project. Because of this, opinions on Juice=Juice’s inclusion this time split between those suspecting “their numbers finally grew too big to ignore” and those taking it more favorably as “they finally got recognized.” Speculation also surfaced that the coverage might be a “self-promotional buy-up” or that “AI wrote it,” but neither theory was based on an actual examination of the book’s contents, so readers should keep in mind these remain unsubstantiated guesses.

*This article is excerpted and summarized from the 5ch (Hello! Project board) thread “Juice=Juice Finally Makes It Into a Business Book.”

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