It has been announced that IS:SUE will be performing the theme song for the new Thursday drama "Renai Kin" (Yomiuri TV/Nippon TV network/every Thursday at 11:59pm), which will begin airing on July 3, 2025.

"Koe" IS:SUE 's first theme song for a drama and is herfirst delicate and emotional ballad song, which deals with the theme of loneliness.

"Hey, is it okay if I break it?

Before kindness turns into poison

It expresses the unknown side of myself, my expectations and dependence, and the cry from the depths of my heart.

The song is impressive for the realism of the voices themselves, which appeal to the subtleties of emotions, and the fresh yet powerful singing voices of the members.

For this work, m-flo's ☆Taku Takahashi is in charge of total production, including lyrics, composition, and arrangement.

Please come and experience a new side of IS:SUE 's vocals.

The full version will be available on various music streaming services from 0:00 on Wednesday, July 9, 2025, so please look forward to it along with the drama broadcast.

IS:SUE's Comment

We at IS:SUE are very happy to be in charge of the theme song for the drama "Renai Kin". The theme song "Koe" is also our first ballad, so we were excited as we prepared it. We hope that it will be a song that will support the hearts of many people, and that it will make the world of the drama even more beautiful and rich. We hopethat our "Koe" will reach the hearts of many people.

☆Taku Takahashi's Comment

I was really excited when I heard that I would be able to produce a ballad for the first time in a while. What's more, I'm especially excited to be providing it to IS:SUE a dance and vocal group whose members are all highly expressive and vocally talented. This time, for the first time in my life, I wrote the entire song myself.I put the "difficulty of living" and "undirected emotions" that everyone has in modern times into the music and words as an inner explosion.I hope that the song will reach out to young people as well as adults.

■ Song information

楽曲名：コエ prod.☆Taku Takahashi (m-flo) 配信開始日：2025年7月9日（水）0:00～　 （読売テレビ・日本テレビ系プラチナイト木曜ドラマ『恋愛禁止』主題歌） ▶Streaming（7月9日配信開始）：https://IS-SUE.lnk.to/koe

▶TikTok（7月4日配信開始）：https://www.tiktokv.com/i18n/share/music/7521607847517521937

※7月4日（金）0:00より、ご利用可能となります。

Apple Music Pre-Add、Spotify Pre-Saveキャンペーンも開催決定！ 詳細はこちら：https://cf.is-sue.jp/news/detail/465 ドラマ公式Web Site https://www.ytv.co.jp/renaikinshi/