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Unhappy Birthday Koubun: Difference between revisions
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!style="padding: 3px"|Year||style="padding: 3px"|Week||style="padding: 3px"|Mon||style="padding: 3px"|Tue||style="padding: 3px"|Wed||style="padding: 3px"|Thu||style="padding: 6px"|Fri||style="padding: 6px"|Sat||style="padding: 3px"|Sun||style="padding: 3px"|Week Rank||style="padding: 3px"|Sales | !style="padding: 3px"|Year||style="padding: 3px"|Week||style="padding: 3px"|Mon||style="padding: 3px"|Tue||style="padding: 3px"|Wed||style="padding: 3px"|Thu||style="padding: 6px"|Fri||style="padding: 6px"|Sat||style="padding: 3px"|Sun||style="padding: 3px"|Week Rank||style="padding: 3px"|Sales | ||
|- align="center" | |- align="center" | ||
|rowspan=" | |rowspan="7" style="background:#efefef;"|<small>'''2025'''</small>||style="padding: 3px"|<small><small>WEEK<br>46</small></small>||– ||style="padding: 3px"|1<br><small><small>433,652</small></small> ||1<br><small><small>34,178</small></small> ||1<br><small><small>14,777</small></small> ||1<br><small><small>10,669</small></small> ||1<br><small><small>21,926</small></small> ||1<br><small><small>10,176</small></small> ||1 ||style="padding: 3px"|525,378 | ||
|- align="center" | |- align="center" | ||
|style="padding: 3px"|<small><small>WEEK<br>47</small></small>||1<br><small><small>6,626</small></small> ||6 ||3<br><small><small>699</small></small> ||8 ||2<br><small><small>1,297</small></small> ||6 ||6 ||2 ||12,098 | |style="padding: 3px"|<small><small>WEEK<br>47</small></small>||1<br><small><small>6,626</small></small> ||6 ||3<br><small><small>699</small></small> ||8 ||2<br><small><small>1,297</small></small> ||6 ||6 ||2 ||12,098 | ||
Latest revision as of 06:05, 24 December 2025





- Artist
- Sakurazaka46
- Single
- Unhappy birthday Koubun (Unhappy birthday構文; Unhappy birthday Syntax)
- Released
- 2025.10.29
- Catalog Number
- SRCL-13430~1 (Limited Edition Type-A)
- SRCL-13432~3 (Limited Edition Type-B)
- SRCL-13434~5 (Limited Edition Type-C)
- SRCL-13436~7 (Limited Edition Type-D)
- SRCL-13438 (Regular Edition)
- Price
- ¥2,000 (Limited Editions)
- ¥1,200 (Regular Edition)
- Limited Edition Type-A CD Tracklist
- Unhappy birthday Koubun (Unhappy birthday構文)
- Alter ego
- Kogarashi wa Nakanai (木枯らしは泣かない; The Cold Wind Doesn't Cry)
- Unhappy birthday Koubun -OFF VOCAL ver.-
- Alter ego -OFF VOCAL ver.-
- Kogarashi wa Nakanai -OFF VOCAL ver.-
- Limited Edition Type-A Blu-ray Tracklist
- 12th Single BACKS LIVE!! ~Center Performance Collections~ <Part 1>
- Minatoku Parsley (港区パセリ)
- Utsukushiki Nervous (美しきNervous)
- Koi ga Zetsumetsu Suru Hi (恋が絶滅する日)
- Anthem time
- Koi wa Muitenai (恋は向いてない)
- Nando LOVE SONG no Kashi wo Yomikaeshita Darou (何度 LOVE SONGの歌詞を読み返しただろう)
- Limited Edition Type-B CD Tracklist
- Unhappy birthday Koubun (Unhappy birthday構文)
- Alter ego
- Aozora ga Mieru Made (青空が見えるまで; Until the Blue Sky Appears)
- Unhappy birthday Koubun -OFF VOCAL ver.-
- Alter ego -OFF VOCAL ver.-
- Aozora ga Mieru Made -OFF VOCAL ver.-
- Limited Edition Type-B Blu-ray Tracklist
- 12th Single BACKS LIVE!! ~Center Performance Collections~ <Part 2>
- Moshika Shitara Shinjitsu (もしかしたら真実
- Blue Moon Kiss (ブルームーンキス)
- Cool
- Nakasete Hold me tight! (泣かせて Hold me tight!)
- Kimi no Koto wo Omoi Nagara (君のことを想いながら)
- Limited Edition Type-C CD Tracklist
- Unhappy birthday Koubun (Unhappy birthday構文)
- Alter ego
- I will be
- Unhappy birthday Koubun -OFF VOCAL ver.-
- Alter ego -OFF VOCAL ver.-
- I will be -OFF VOCAL ver.-
- Limited Edition Type-C Blu-ray Tracklist
- Sakurazaka46 4th Generation "First Showcase" <Part 1> (櫻坂46 四期生「First Showcase」 <前編>)
- OPENING
- Tokugi Hirou (特技披露; Showing Off Special Skills)
- Shifuku Fashion Show (私服ファッションショー; Casual Fashion Show)
- Limited Edition Type-D CD Tracklist
- Unhappy birthday Koubun (Unhappy birthday構文)
- Alter ego
- Buddies (English Version)
- Unhappy birthday Koubun -OFF VOCAL ver.-
- Alter ego -OFF VOCAL ver.-
- Buddies (English Version) -OFF VOCAL ver.-
- Limited Edition Type-D Blu-ray Tracklist
- Sakurazaka46 4th Generation "First Showcase" <Part 2> (櫻坂46 四期生「First Showcase」 <後編>)
- OPENING VTR
- Overture
- DANCE TRACK
- Jigoujitoku (自業自得)
- Drone Senkai Chuu (ドローン旋回中)
- Shindafuri (死んだふり)
- VTR
- Shijima no Bouryoku (静寂の暴力)
- I want tomorrow to come
- Sakurazaka no Uta (櫻坂の詩)
- Regular Edition CD Tracklist
- Unhappy birthday Koubun (Unhappy birthday構文)
- Alter ego
- Yozora de Ichiban Kagayaiteru Hoshi no Namae wo Boku wa Shiranai (夜空で一番輝いてる星の名前を僕は知らない; I Don't Know the Name of the Brightest Star in the Night Sky)
- Unhappy birthday Koubun -OFF VOCAL ver.-
- Alter ego -OFF VOCAL ver.-
- Yozora de Ichiban Kagayaiteru Hoshi no Namae wo Boku wa Shiranai -OFF VOCAL ver.-
- Information
"Unhappy birthday Koubun" is the thirteenth single released by Sakurazaka46. It was released in five versions: four limited CD+Blu-ray editions in types A, B, C, and D, and a regular CD-only edition.
Selected Members

"Unhappy birthday Koubun"
Names in bold indicate the Sakura Eight.
- (Center: Murai Yu)
- 2nd gen: Ozono Rei, Tamura Hono, Fujiyoshi Karin, Matsuda Rina, Morita Hikaru, Moriya Rena, Yamasaki Ten
- 3rd gen: Ishimori Rika, Endo Riko, Matono Mio, Mukai Itoha, Murai Yu, Murayama Miu, Yamashita Shizuki
"Alter ego"
Artist: 4th Generation (四期生)
- (Center: Yamakawa Ui)
- 4th gen: Asai Konomi, Inaguma Hina, Katsumata Haru, Sato Neo, Nakagawa Chihiro, Matsumoto Wako, Meguro Hiiro, Yamakawa Ui, Yamada Momomi
"Kogarashi wa Nakanai"
Artist: BACKS Members (BACKSメンバー)
- (Center: Taniguchi Airi)
- 2nd gen: Inoue Rina, Onuma Akiho, Kosaka Marino, Takemoto Yui, Masumoto Kira
- 3rd gen: Odakura Reina, Kojima Nagisa, Taniguchi Airi, Nakashima Yuzuki
"Aozora ga Mieru Made"
Artist: 2nd Generation (二期生)
- 2nd gen: Inoue Rina, Endo Hikari, Ozono Rei, Onuma Akiho, Kosaka Marino, Takemoto Yui, Tamura Hono, Fujiyoshi Karin, Masumoto Kira, Matsuda Rina, Morita Hikaru, Moriya Rena, Yamasaki Ten
"I will be"
Artist: BACKS Members (BACKSメンバー)
- 2nd gen: Inoue Rina, Onuma Akiho, Kosaka Marino, Takemoto Yui, Masumoto Kira
- 3rd gen: Odakura Reina, Kojima Nagisa, Taniguchi Airi, Nakashima Yuzuki
"Buddies (English Version)"
- 2nd gen: Inoue Rina, Endo Hikari, Ozono Rei, Onuma Akiho, Kosaka Marino, Takemoto Yui, Tamura Hono, Fujiyoshi Karin, Masumoto Kira, Matsuda Rina, Morita Hikaru, Moriya Rena, Yamasaki Ten
- 3rd gen: Ishimori Rika, Endo Riko, Odakura Reina, Kojima Nagisa, Taniguchi Airi, Nakashima Yuzuki, Matono Mio, Mukai Itoha, Murai Yu, Murayama Miu, Yamashita Shizuki
- 4th gen: Asai Konomi, Inaguma Hina, Katsumata Haru, Sato Neo, Nakagawa Chihiro, Matsumoto Wako, Meguro Hiiro, Yamakawa Ui, Yamada Momomi
"Yozora de Ichiban Kagayaiteru Hoshi no Namae wo Boku wa Shiranai"
- 2nd gen: Ozono Rei, Tamura Hono, Fujiyoshi Karin, Matsuda Rina, Morita Hikaru, Moriya Rena, Yamasaki Ten
- 3rd gen: Ishimori Rika, Endo Riko, Matono Mio, Mukai Itoha, Murai Yu, Murayama Miu, Yamashita Shizuki
Song Information
- Lyrics
- Akimoto Yasushi
- Music
- NAZCA
- Other Information
- Arrangement: Stella
Music Video Information
- Director
- Masaki Watanabe (maxilla)
- Choreographer
- TAKAHIRO
- Producer
- Kohama Hajime (P.I.C.S.)
- Other Information
- Production: P.I.C.S.
Oricon Chart Positions
| Year | Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Week Rank | Sales |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | WEEK 46 |
– | 1 433,652 |
1 34,178 |
1 14,777 |
1 10,669 |
1 21,926 |
1 10,176 |
1 | 525,378 |
| WEEK 47 |
1 6,626 |
6 | 3 699 |
8 | 2 1,297 |
6 | 6 | 2 | 12,098 | |
| WEEK 48 |
3 976 |
17 | 19 | 11 | 6 | 15 | 11 | 12 | 3,336 | |
| WEEK 49 |
4 | 20 | 24 | 18 | 8 | 21 | 20 | 17 | 2,148 | |
| WEEK 50 |
25 | 13 | 28 | 13 | 7 | 31 | 33 | 19 | 1,673 | |
| WEEK 51 |
6 | 40 | 30 | 38 | 16 | 48 | 48 | 27 | 1,293 | |
| WEEK 52 |
4 | 45 | 44 | 37 | 25 | 35 | – | 28 | 1,596 | |
| 2026 | WEEK 1 |
– | 45 | – | 41 | – | 40 | – | 63 | 400 |
| WEEK 2 |
25 | x | x | x | x | x | x | x | x |
| Year | Month | Rank | Sales |
|---|---|---|---|
| 2025 | October | 2 | 525,378 |
| November | 9 | 19,255 |
- Total Reported Sales: 547,922*
- Total # of Weeks Charted: 8
External Links
- Special Website
- Oricon Profile: Limited Edition Type-A | Limited Edition Type-B | Limited Edition Type-C | Limited Edition Type-D | Regular Edition
- YouTube: Music Video
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