At Seoul Fashion Week, LIGHTSUM's Ju-hyun and Cho-won walked the runway, marking a milestone for the group with their first unit.

On the afternoon of the 4th, Seoul Fashion Week kicked off at the Dongdaemun Design Plaza, featuring the PHENOMENON SEEPER collection. Notable attendees included Han Seungwoo, DREAMCATCHER's Sua, and members from LIGHTSUM, Queenz Eye, and more. Additionally, Han Sona reportedly opposed her brother's idol debut, referencing their past matching outfits. The event also celebrated DREAMCATCHER's first unit, UAU, with a showcase for their mini-album 'Playlist #You Are You.'

At the 68th Grammy Awards, the song "Golden" from the Netflix film "KPOP Girls! Demon Hunters" won Best Song Written For Visual Media. The song, performed by the fictional girl group Huntr/x, achieved significant success, topping charts and garnering over a billion views on YouTube. It has inspired numerous K-POP artists to create cover versions, showcasing its global impact.

On January 21, MBC MUSIC's SHOW CHAMPION aired live from Goyang City, featuring ALPHA DRIVE ONE as the winner. Other performers included SAY MY NAME, Chuu, and members from Golden Child, n.SSign, LIGHTSUM, and former SM trainees. SAY MY NAME celebrated their first music show win after debuting on Music Bank.

On January 21, ALPHA DRIVE ONE achieved first place on MBC MUSIC's SHOW CHAMPION, just 10 days post-debut. The show featured performances from various artists including SAY MY NAME, Chuu, and former SM trainees. The event took place at MBC Dream Center in Gyeonggi-do, highlighting the rapid rise of ALPHA DRIVE ONE in the music scene.

LIGHTSUM's first unit, featuring San-a, Chowon, and Juhyun, has launched their digital single "Beautiful Pain," showcasing their distinct vocal styles. The song reinterprets BTOB's hit, blending acoustic elements with emotional depth. The members express excitement and gratitude towards their fans, SUMIT, for their support.

LIGHTSUM announces the release of their first unit single 'Beautiful Yet Sad' by members Sunah, Chowon, and Juhyun. The song features emotional vocals and a reinterpretation of a BTOB hit, blending acoustic guitar melodies with LIGHTSUM's delicate sensibilities. The trio aims to deliver warmth during winter, and their previous cover of 'Golden' has already garnered significant attention. The single is available on all music streaming platforms.

CUBE Entertainment announced that LIGHTSUM will debut a new unit group consisting of Sanah, Chowon, and Juhyun, releasing a single in January. The trio, dressed in white against a black background, exudes sophistication and harmony. They previously gained attention with their cover of 'Golden' for the Netflix OST of 'KPOP Girls! Demon Hunters.'

On the afternoon of the 5th, the 2026 S/S Seoul Fashion Week kicked off at the Dongdaemun Design Plaza, featuring a photo wall event for the 'Kwak Hyun-joo' collection. Attendees included K-pop idols from Billlie, former NMIXX member Jinny, and various other stars, showcasing the event's star power.

On the afternoon of the 5th, the 2026 S/S Seoul Fashion Week kicked off at Dongdaemun Design Plaza, showcasing the PHENOMENONSEEPER photo wall event with appearances from K-pop stars like PENTAGON's Wooseok, former CIX member Bae Jinyoung, and members from groups such as EVERGLOW, FIFTY FIFTY, and DREAMCATCHER.

Cosmetic brand 3650 will start a new promotion featuring LIGHTSUM from August 2025, under the theme 'My 3650'. The campaign will highlight the brand's pursuit of functional beauty through promotional videos. The brand aims to enhance daily makeup enjoyment for everyone, resonating with LIGHTSUM's positive energy.