1st Is:sue

1st Is:sue
1st Is:sue
	Digital and standard version cover
Single album by Is:sue
Released	June 19, 2024
Studio	WakeOne Studio
Genre	J-pop; trap; jersey club;
Length	3:14
Language	Japanese; English;
Label	Lapone Girls; Universal Sigma;
Producer	Park Woo Sang (LOGOS); Choi Shin Hwa (exec.);
Is:sue chronology
Singles from 1st Is:sue
	"Connect"; Released: May 17, 2024;

1st Is:sue is the first single album by Japanese girl group Is:sue. It was released on June 19, 2024, by Lapone Girls and Universal Sigma.

Background and release

On April 25, 2024, it was announced that the four finalists from Produce 101 Japan The Girls, a reality competition show, had signed a contract with Lapone Entertainment under its newly established sub-label Lapone Girls, and formed the new girl group Is:sue. It was concurrently revealed that the group would make its official debut on June 19, 2024, with the release of their first single album, 1st Is:sue.^[1]

On May 17, the group released the lead single from 1st Is:sue, "Connect".^[2]

Commercial performance

1st Is:sue reached number one on the Oricon weekly chart.^[3] Additionally, the lead track "Connect" peaked at number two on the Billboard Japan Hot 100.^[4]

Track listing

Track listing for *1st Is:sue*
No.	Title	Lyrics	Music	Arrangement	Length
1.	"Connect"	LOGOS Kurtz BORAN	Masami Kakimura Rose Blueming Hiyori Nara	LOGOS Kurtz	3:14
2.	"Static"	Blueming Nara Anna Kusakawa	LOGOS Kurtz Livy	LOGOZ Kurtz	3:11
Total length:					6:25

Charts

Weekly charts

Weekly chart performance for *1st Is:sue*
Chart (2023)	Peak position
Japan (Oricon)^[5]	1
Japan Combined Singles (Oricon)^[6]	1
Japan Top Singles Sales (Billboard Japan)^[7]	1

Monthly charts

Monthly chart performance for *1st Is:sue*
Chart (2024)	Peak position
Japan (Oricon)	5

Year-end charts

Year-end chart performance for *1st Is:sue*
Chart (2024)	Position
Japan (Oricon)	61
Japan Top Singles Sales (Billboard Japan)^[8]	67

Certifications and sales

Certifications for "1st Is:sue"
Region	Certification	Certified units/sales
Japan (RIAJ)^[9]	Gold	100,000^{^}
^{^} Shipments figures based on certification alone.

Release history

Release history for *1st Is:sue*
Region	Date	Format	Label	Ref.
Various	June 18, 2024	Digital download streaming	Lapone Girls Universal Sigma	^[10]
Japan	June 19, 2024	CD	Lapone Girls Universal Sigma	^[11]

References

^ "「Produce 101 Japan The Girls」最終候補者4人、新ガールズグループ「Is:sue」結成&デビューシングル発表". Oricon News (in Japanese). 2024-04-25. Retrieved 2025-09-23.
^ "Is:sue、デビュー前に先行配信シングル「Connect」リリース". Billboard Japan (in Japanese). 2024-05-17. Retrieved 2025-09-23.
^ "Is:sue、デビューシングル『1st IS:SUE』がオリコン週間ランキング1位獲得". Oricon News (in Japanese). 2024-06-25. Retrieved 2025-09-23.
^ "Is:sue's "CONNECT" reaches #2 on Billboard Japan Hot 100". Billboard Japan (in Japanese). 2024-06-26. Retrieved 2025-09-23.
^ "Oricon Weekly Single Ranking – 2024-06-25". Oricon News.
^ "IS:SUE、デビューシングルが「オリコン音楽ランキング」2冠【オリコンランキング】". Oricon. 4 April 2025. Retrieved September 21, 2025.
^ "Billboard Japan Top Singles Sales – Week of January 11, 2023". Billboard Japan (in Japanese). Retrieved January 18, 2023.
^ "Billboard Japan Top Singles Sales – Year-End 2024". Billboard Japan (in Japanese).
^ "Japanese single certifications – Twice – 1st Is:sue" (in Japanese). Recording Industry Association of Japan. Retrieved September 21, 2025. Select 2024年6月 on the drop-down menu
^ "1st IS:SUE" – via mora.
^ "IS:SUEデビューシングルのコンセプトトレーラー公開、NEW HERO誕生の"序章"を見せる" – via Bezzy.

[1] "「Produce 101 Japan The Girls」最終候補者4人、新ガールズグループ「Is:sue」結成&デビューシングル発表". Oricon News (in Japanese). 2024-04-25. Retrieved 2025-09-23.

[2] "Is:sue、デビュー前に先行配信シングル「Connect」リリース". Billboard Japan (in Japanese). 2024-05-17. Retrieved 2025-09-23.

[3] "Is:sue、デビューシングル『1st IS:SUE』がオリコン週間ランキング1位獲得". Oricon News (in Japanese). 2024-06-25. Retrieved 2025-09-23.

[4] "Is:sue's "CONNECT" reaches #2 on Billboard Japan Hot 100". Billboard Japan (in Japanese). 2024-06-26. Retrieved 2025-09-23.

[sc_2024-06-25-5] "Oricon Weekly Single Ranking – 2024-06-25". Oricon News.

[6] "IS:SUE、デビューシングルが「オリコン音楽ランキング」2冠【オリコンランキング】". Oricon. 4 April 2025. Retrieved September 21, 2025.

[7] "Billboard Japan Top Singles Sales – Week of January 11, 2023". Billboard Japan (in Japanese). Retrieved January 18, 2023.

[8] "Billboard Japan Top Singles Sales – Year-End 2024". Billboard Japan (in Japanese).

[RIAJ-9] "Japanese single certifications – Twice – 1st Is:sue" (in Japanese). Recording Industry Association of Japan. Retrieved September 21, 2025. Select 2024年6月 on the drop-down menu

[10] "1st IS:SUE" – via mora.

[11] "IS:SUEデビューシングルのコンセプトトレーラー公開、NEW HERO誕生の"序章"を見せる" – via Bezzy.

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