The environmental event “GTF Green Challenge Day 2026” has been announced for November 7–8, 2026, at Shinjuku Gyoen, with OCHA NORMA, Nakajima Saki, Morito Chisaki, and Koseki Mai confirmed as performers. Taking part itself is free, but visitors must pay the Shinjuku Gyoen garden admission fee separately. On 5ch’s Hello! Project board, fans voiced confusion that what used to be a "reward event" where fans could mingle with trainees is now centered on veteran (OG) members, alongside complaints that this year’s date is a month earlier than usual and that the lineup feels underwhelming — with some also questioning why Morito and Koseki keep being paired together as a fixed set.
What people said
1AnonymousOct 7, 2026 12:05
Lineup Confirmed for 'GTF Green Challenge Day 2026 in Shinjuku Gyoen'!
3AnonymousOct 7, 2026 12:06
Event Dates
Saturday, November 7 – Sunday, November 8, 2026
Hours
10:00 AM – 4:00 PM
Shinjuku Gyoen gates open at 9:00 AM
*Held rain or shine; cancelled only in severe weather
Venue
Shinjuku Gyoen National Garden – Landscape Garden & Formal Garden area (11 Naitomachi, Shinjuku-ku, Tokyo)
Performers
Sat. the 7th: Joujou Gundan / Nakajima Saki
Sun. the 8th: Hayashi Maya / Joujou Gundan / Morito Chisaki / Koseki Mai / OCHA NORMA
*Performers subject to change without notice.
Participation
Free (Shinjuku Gyoen garden admission must be paid separately at the gate)
*Garden admission: Adults ¥500, ages 65+ & students (high school and up) ¥250, junior high and under free
Inquiries
Please contact the GTF Secretariat via the inquiry form.
6AnonymousOct 7, 2026 12:09
Speak of Ozecchi (Koseki Mai's nickname) and 'Deca-bo' comes to mind (Japan's catchy decarbonization-campaign buzzword she's tied to).
7AnonymousOct 7, 2026 12:09
Ozecchi's basically become everyone's go-to fill-in (lit. 'handyman') at this point, huh.
8AnonymousOct 7, 2026 12:09
The annual autumn SATOYAMA tradition
10AnonymousOct 7, 2026 12:10
Isn't this supposed to be trainee work? Why's OCHA NORMA being shoved in here
11AnonymousOct 7, 2026 12:10
That's pretty lame.
12AnonymousOct 7, 2026 12:10
Well, guess I have no choice but to go!
14AnonymousOct 7, 2026 12:11
Wish they'd do a SATOYAMA event in autumn too.
15AnonymousOct 7, 2026 12:11
I went back when Rosy (member nickname) was still in the trainee unit —
it's fun if the weather's nice.
17AnonymousOct 7, 2026 12:15
Got stuff to do in Ikebukuro on Sunday —
guess I'll swing by the garden for the last couple hours.
18AnonymousOct 7, 2026 12:15
A month earlier than usual, huh.
19AnonymousOct 7, 2026 12:17
(ﾉ∀`) It shouldn't be Ocha(-NORMA) here — this is the kind of event where Yoshida and Hattori ought to be leading the charge, with everyone trooping in behind them.
20AnonymousOct 7, 2026 12:22
Morito Chisaki / Koseki Mai / OCHA NORMA confirmed for 'GTF Green Challenge Day 2025 in Shinjuku Gyoen'!
https://kizuna.5ch.io/test/read.cgi/morningcoffee/1759298429/
21AnonymousOct 7, 2026 12:22
Oh, no Hello! Project trainees this time?
Guess I don't need to go then.
22AnonymousOct 7, 2026 12:23
If I actually knew Ozecchi in person I'd love to have some flirty fun (kyaa-kyaa-ufufu, slang for giggly cuteness), but that's never happening for me.
I want the full Hayashi Maya treatment (lit. 'baptism').
25AnonymousOct 7, 2026 12:27
Oh, Booska's (member nickname) gonna be there huh
Hmm…
26AnonymousOct 7, 2026 12:28
Go have some face time with nksk (Nakajima Saki's online nickname) then.
27AnonymousOct 7, 2026 12:29
Going Solo to GTF Green Challenge Day 2025 in Shinjuku Gyoen [Shinjuku Gyoen Landscape Garden, Nov 1–2]
https://kizuna.5ch.io/test/read.cgi/morningcoffee/1761855710/
28AnonymousOct 7, 2026 12:30
So Morito's a TV talent now, not an idol?
29AnonymousOct 7, 2026 12:31
Quit lazily bundling Morito and Koseki together as a set deal.
30AnonymousOct 7, 2026 12:33
Put Chii-chan (Morito Chisaki's nickname) on TV already.
32AnonymousOct 7, 2026 12:39
The lineup's way too thin.
Doubt this'll pull a crowd.
Cross-unit projects like that
are always tough to get everyone back together for later on.
39AnonymousOct 7, 2026 12:47
I figured Aoka-chan (member nickname) would be appearing,
so I skipped signing up for Ocha's Kashiwa show on the 7th and Rosy's Shinjuku matinee on the 8th —
total whiff on my prediction.
41AnonymousOct 7, 2026 12:58
Do Nakajima and Morito ever cross paths for work?
50AnonymousOct 7, 2026 13:38
Honestly even just more nksk (Nakajima Saki) is fine — just add a handshake/meet-and-greet event already.
51AnonymousOct 7, 2026 13:38
Wish nksk (Nakajima Saki) would just hurry up and find a happy marriage already.
53AnonymousOct 7, 2026 13:40
Somebody just propose to Kyufu-chan (member nickname) already.
Background and Key Points of This Discussion
“GTF Green Challenge Day” is an annual autumn event held at Shinjuku Gyoen centered on environmental conservation, and in recent years Hello! Project has stayed involved by having trainees and current members perform on a rotating, day-by-day basis. As pointed out in the thread, the 2026 event falls in November, about a month earlier than in past years. Opinions in the thread split between those who felt the lineup paled in comparison to the days when trainees took center stage, and debate over whether Morito Chisaki and Koseki Mai appearing together has become too much of a fixed pairing. It’s also worth noting that while taking part is free, the Shinjuku Gyoen garden admission fee (¥500 for adults, etc.) is required separately — a detail clearly stated in the official announcement but barely mentioned in the thread, making it an easy point to overlook.
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