OSEN DB.LIGHTSUM Japan Debut Begins With Title Track Doshite
LIGHTSUM Japan Debut activities are officially underway as the talented K-pop girl group builds excitement for their upcoming release. On September 16, 2026, girl group LIGHTSUM (Sangah, Chowon, Nayoung, Hina, Juhyeon, Yujeong) unveiled the digital sound source for ‘どうして’ (Doshite), the main title track of their upcoming Japanese debut album ‘Re:idol’.
Heart-Fluttering Lyrics and Catchy Melodies
The title track ‘どうして’ (Doshite) charmingly captures the excitement and nervousness of an unrequited crush, highlighting the emotional rollercoaster of being swayed by a loved one’s words and actions. Featuring honest lyrics like ‘もしかして、好き?’ (Could you possibly like me?) and ‘どうして キュンが止まらないの’ (Why won’t this heart-fluttering feeling stop?), combined with a vibrant and catchy melody, the song delivers a delightful rush of excitement.
Inside the ‘Re:idol’ Tracklist
The upcoming Japanese debut album ‘Re:idol’ will feature a total of five tracks. This includes the title track ‘Doshite’, alongside three brand new songs—’Fallin’ World’, ‘Stop and Go’, and ‘夜をく君へ’—as well as a special ‘Kawaii’ version of their 2024 digital single, ‘POSE! (Kawaii ver.)’. According to industry representatives, LIGHTSUM will showcase a fresh and charming transformation through this album, blending their signature bright and energetic vibe with cute Japanese sensibilities.
