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Happy birthday to the shopaholic bookworm of F-LAGS, Kazuki Tsukumo! We hope that KazukiPs decide what to read from their TBR today! 📚

Trivia: He decorates his desk with various otter-themed items his fans sent him!

(Mod note: admin's having severe wifi problems lately, so Asselin and Chris' birthday line TLs will be up at a later date! Sorry for the inconvenience 🫠)

Happy birthday to the oceanic adventurer of Legenders, Chris Koron! We hope that ChrisPs will have a beach-side treat this autumn! 🤿

Trivia: He’s more used to right-hand traffic when driving, that it took him a bit to adjust to Japan’s left-hand traffic!

～P@SSION CHALLENGE We are 315!～ MONTHLY THEME SONG 02 Shinsoku Ikkon page from Lantis' SideM website

Next on ～P@SSION CHALLENGE We are 315!～ MONTHLY THEME SONG: Shinsoku Ikkon! Their CD will be released on Christmas Eve (Dec 24)!

THE IDOLM@STER SideM ～P@SSION CHALLENGE We are 315!～ MONTHLY THEME SONG 01 S.E.M 1. Break All Time! 2. Break All Time! (Michio Hazama Solo Ver.) 3. Break All Time! (Rui Maita Solo Ver.) 4. Break All Time! (Jiro Yamashita Solo Ver.) 5. Break All Time! (Off Vocal)

Here’s the tracklist for the CD!
Also, there’ll be a serial code for a bonus story!

THE IDOLM@STER SideM ～P@SSION CHALLENGE We are 315!～ MONTHLY THEME SONG 01 S.E.M 1. Break All Time! 2. Break All Time! (Michio Hazama Solo Ver.) 3. Break All Time! (Rui Maita Solo Ver.) 4. Break All Time! (Jiro Yamashita Solo Ver.) 5. Break All Time! (Off Vocal)

The CD preview for ～P@SSION CHALLENGE We are 315!～ MONTHLY THEME SONG 01 S.E.M is finally up! Take a peek at S.E.M’s new song for the new CD series: “Break All Time!” 🏫

Look forward to the Nov 26 release! 💫
🔗 youtu.be/LgkA_hHvpSE

Namco limited merch items, including acrylic figures and Chibigurumis

765AS – Hibiki, Miki, Yayoi, Ami CG – Yuuki, Yuka, Hayate, Haru ML! – Ayumu, Tsubasa, Umi, Iku SideM – Takeru, Daigo, Amehiko, Momohito SC – Mikoto, Hiori, Kaho, Asahi GK – Ume, Saki, Mao, Sumika

More details about the collab are in the event link below:
🔗 bandainamco-am.co.jp/event/game_c...

Also, these 24 idols in the collab will have additional chibi art (Bold text includes the full body art), and the campaign will include FOUR new batches of limited Chibigurumi nuis!

THE IDOLM@STER Series @ Namco Cheerful Ensemble campaign key visual, featuring Hibiki Ganaha, Yuuki Otokura, Ayumu Maihama, Takeru Taiga, Mikoto Aketa, and Ume Hanami!

THE IDOLM@STER Series @ Namco Cheerful Ensemble campaign chibi art 765AS – Hibiki, Miki, Yayoi, Ami CG – Yuuki, Yuka, Hayate, Haru ML! – Ayumu, Tsubasa, Umi, Iku SideM – Takeru, Daigo, Amehiko, Momohito SC – Mikoto, Hiori, Kaho, Asahi GK – Ume, Saki, Mao, Sumika

A new Namco collab campaign has been announced, now with a sports festival theme! THE IDOLM@STER Series @ Namco Cheerful Ensemble campaign will run from Nov 21 to Dec 21! 🏅

The lead idols include Hibiki (HBD! 🎂), Yuuki, Ayumu, Takeru, Mikoto, and Ume!

Rei, Minori, Asselin, and Ryo in their TRANSCENDENT T@LES outfits

Next on TRANSCENDENT T@LES: As previously shown, Rei, Minori, Asselin, and Ryo will star in the tale of “Momotaro” as the theme!

Look forward to the story + song preview release on Nov 6th! ✨

CONNECT WITH MUSIC! CD bonus story "Akogare no Onii-san-tachi e" synopsis

Here is a synopsis of the CD’s bonus story!

THE IDOLM@STER SideM TRANSCENDENT T@LES 03 1. CAST A SPELL 2. CAST A SPELL (Hokuto Ijuin Solo Ver.) 3. CAST A SPELL (Kaoru Sakuraba Solo Ver.) 4. CAST A SPELL (Natsuki Sakaki Solo Ver.) 5. CAST A SPELL (Amehiko Kuzunoha Solo Ver.) 6. CAST A SPELL (Off Vocal)

THE IDOLM@STER SideM TRANSCENDENT T@LES 03 1. CAST A SPELL 2. CAST A SPELL (Hokuto Ijuin Solo Ver.) 3. CAST A SPELL (Kaoru Sakuraba Solo Ver.) 4. CAST A SPELL (Natsuki Sakaki Solo Ver.) 5. CAST A SPELL (Amehiko Kuzunoha Solo Ver.) 6. CAST A SPELL (Off Vocal)

With this, the CD preview for TRANSCENDENT T@LES 03 and the song “CAST A SPELL” is now out! The CD also includes solo versions, off vocals, and a serial code for a bonus story! 🐪

Look forward to the Dec 3 release!
🔗 youtu.be/sf5fTwAagDo

315 PASSION CONTENTS | CONNECT WITH MUSIC！詳細 315 PASSION CONTENTS | CONNECT WITH MUSIC！詳細

Regular Asobistore members can freely view the first 5 chapters on Asobistory!
🔗 asobistory.asobistore.jp/connectwithm...

CONNECT WITH MUSIC! story "Hirake, Chousen no Tobira" splash art preview

CONNECT WITH MUSIC! story "Hirake, Chousen no Tobira" synopsis

The third CONNECT WITH MUSIC! story for TRANSCENDENT T@LES is out, featuring Hokuto, Kaoru, Natsuki, and Amehiko in their “Ali Baba and the Fourty Thieves” theme! 🐪

Contains 19 fully voiced chapters and a new splash art!

Hark, all are invited to the banquet celebrating the Lord of Darkness from Café Parade, Asselin Beelzebuth II! Let us all indulge in his Samba of Darkness with Satan by his side! 😈

Trivia: His competitive spirit shines upon him, calling those he challenges as worthy rivals!

315 Production presents F＠NTASTIC BATTLE FES ～Who goes first～ 幕張公演 ASOBI STOREで体験する新感覚のオンラインステージ「ASOBI STAGE」。ライブやコンサートをリアルタイムで配信し、オンライン視聴ならではの楽しみ方を提供します。アーティストと観客が一緒に創り上げる最高のLIVEステージを体験しよう！

Note: each performance on the Makuhari/Osaka legs will be slightly different!

Streaming tickets are up for sale on Asobistage until Nov 3, 18:00 JST! For the Producers watching, good luck and have fun!
🔗 asobistage.asobistore.jp/event/sidem_...

Producers! Today is Day 1 of the Makuhari leg of F@NTASTIC BATTLE FES ～Who goes first～! 🥇

The daytime show starts later at 12:00 JST, while the evening show starts at 17:30 JST! (This applies to both today’s and tomorrow’s shows!)

THE IDOLM@STER SideM TRANSCENDENT T@LES 01 1. Wonderlander's Party 2. Wonderlander's Party (Touma Amagase Solo Ver.) 3. Wonderlander's Party (Hideo Akuno Solo Ver.) 4. Wonderlander's Party (Makio Uzuki Solo Ver.) 5. Wonderlander's Party (Ren Kizaki Solo Ver.) 6. Wonderlander's Party (Off Vocal)

With this, the CD preview for TRANSCENDENT T@LES 01 and the song “Wonderlander's Party” is currently out! The CD also includes solo versions, off vocals, and a serial code for a bonus story!

Look forward to the Oct 1 release!
🔗 youtu.be/BUhA2PFxE4U

October 2025 SideM calendar

November 2025 SideM calendar

Next livestream to be held on Nov 5, 2025, 19:00~ JST!

By the way: calendars for October and November were shown on stream! 🍁

The next SideM stream will be held on Nov 5th!

CONNECT WITH MUSIC! story "Hirake, Chousen no Tobira" splash art preview and synopsis

CONNECT WITH MUSIC! story "Mezase, Nippon Ichi no "Momotaro"!" synopsis

Story updates! 🍁
- TRANSCENDENT T@LES 03 (Ali Baba) story and song preview on Oct 9 (Asselin’s birthday)!
- 04 will feature Rei, Minori, Asselin, and Ryo in “Momotaro” motif! Story + CD preview on Nov 6!

RETROSE PARTY chibi key visuals with FRAME, High×Joker, Mofumofuen, and THE Kogado

Here's the chibi art for the event!
Done by Yunyun (@/yunyuntoiimasu)

RETROSE PARTY key visual

RETROSE SPECIAL PARTY Day 1 (11/1/2025) cast: Shogo Yano (Nao), Keisuke Furuhata (Shiro), Junta Terashima (Takeru), Daiki Hamano (Michiru)

RETROSE SPECIAL PARTY Day 2 (11/8/2025) cast: Kento Hama (Ryu), Takuya Masumoto (Seiji), Shogo Yano (Nao), Keisuke Furuhata (Shiro)

RETROSE SPECIAL PARTY Day 3 (11/23/2025) cast: Takuma Nagatsuka (Jun), Hiroshi Watanabe (Natsuki), Yusuke Shirai (Haruna), Sho Nogami (Shiki)

- The RETROSE PARTY collab in Seibu-en Yuuenchi will take place this November! Feat. FRAME, High×Joker, Mofumofuen, and THE Kogado! 🌹
- Also, there’ll be in-venue Special Party events w/ the VAs on Nov 1, Nov 8, and Nov 23!

SideM January 2026 "Supreme 49 Cakes!!!" birthday goods key visual

"Memories of That Time" goods key visual

Merch/collab news! 🍁
- January birthday goods available for pre-orders until Oct 13!
- “Memories of That Time” (SUPREME STARS !!! illusts) merch available for pre-orders until Oct 26!
(Both are now up on Asobistore!)

YouTube video by アイドルマスターチャンネル 【SideM】F＠NTASTIC BATTLE FES「CROWN US KING!」MV【アイドルマスター】

Producers! Here’s the news from tonight’s stream! 🍁
- The F@NFES ~Who goes first~ theme has been revealed! Here’s “CROWN US KING!” feat. DRAMATIC STARS, FRAME, Sai, High×Joker, Shinsoku Ikkon, THE Kogado, F-LAGS, and Legenders!

Here's the MV! 💫
www.youtube.com/watch?v=54AZ...

Producers! The stream starts in less than an hour! 🍁

Producers, the links for the Sept 26 stream are now up!
YouTube: youtube.com/live/5X9H5GU...
NicoNico: live.nicovideo.jp/watch/lv3486...

S.E.M in their owl-themed outfits for the Fukuroi City collab

Here’s S.E.M in their owl-themed gear!
🔗 www.city.fukuroi.shizuoka.jp/soshiki/4/ci...

Fun fact: The Ecopa Arena was the location for the Shizuoka leg of SideM’s 3rd LIVE TOUR back in 2018!

Welcome to Fukuroi ~315 (Saikou) Memories with 2961 (Fukuroi)~ collab visual, featuring S.E.M and Fukuroi City mascot Fuppy

S.E.M has been chosen as the collab unit for the 20th Anniversary of Fukuroi City’s establishment in Shizuoka! Look at the city’s own Fuppy wearing their unit outfits! 🦉

“Welcome to Fukuroi ~315 (Saikou) Memories with 2961 (Fukuroi)~” will run from 2025/11/1–2026/1/31!

Producers! You can check out the CONNECT WITH STAGE! stories for DRAMATIC STARS, S.E.M, Altessimo, and Sai on the official IM@S Channel now until Sept 24, 19:59 JST!

(Each story is linked in the replies!)

⭐🎂✨
I'd never thought the day would come where a lively birthday party would be the norm... Still, I can accept Kashiwagi’s presents, the cake Tendo prepared, and blessings from you… with such gratitude.
⭐🎂✨

#sidemTL

Happy birthday to the precise blue of DRAMATIC STARS, Kaoru Sakuraba! We hope that KaoruPs have a nice cup of coffee today! 🐬

Trivia: He usually prefers the sounds of silence when he’s doing something, as he can get easily bothered by even the slightest hint of noise!