Keina Suda releases new single Rubble as opening theme for Captivated, by You

Keina Suda is back with Rubble — a stirring new single that sets the emotional stage for the anime Captivated, by You. Serving as the show’s official opening theme, the bittersweet mid-tempo track captures feelings of longing and reunion, instantly connecting with fans of coming-of-age stories.

Suda, known to many as former Vocaloid producer Balloon and creator of the viral hit Charles (150M+ YouTube views across versions), continues to bridge intimate bedroom pop with widescreen cinematic sound. His music speaks directly to young listeners who find themselves reflected in his heartfelt storytelling.

Anime ties bring deeper emotional connection

Rubble showcases Keina Suda’s signature touch — delicate vocals layered with cinematic depth. Its official music video immerses fans in the track’s world, while the non-credit anime opening lets audiences feel its emotional resonance alongside the series.

The anime is based on the work of acclaimed creator Yama Wayama, also known for Let’s Go Karaoke!. It follows fleeting encounters and unique high school moments, centered on mysterious second-year student Miyoshi Hayashi and his classmate Akira Nikaidou, who experiences a “reverse high school debut.”

A soundtrack for adolescence and fleeting moments

Captivated, by You thrives on its omnibus-style storytelling, blending humor, warmth, and the charm of everyday life. With Rubble, Keina Suda provides the perfect musical counterpart, amplifying the show’s themes of adolescence, growth, and fleeting emotions.

More than just an anime theme, Keina Suda Rubble is a soundtrack to youth itself — tender, cinematic, and unforgettable.