In January 2024, Pledis Entertainment proceeded with their plans to launch TWS, the entertainment label's first boy group in nine years, since Seventeen's debut in 2015.[2] The music video for the song "Oh Mymy: 7s" served as the first preview for TWS' EP a few days before its official release.[2] Several teasers and activities, including a highlight medley,[3] a product endorsement deal with Lotte Chilsung's Milkis,[4] and cover features on Japanese magazines Ray and ViVi,[5] were also revealed to promote and build anticipation for TWS' first EP.
On January 22, 2024, Sparkling Blue, a five-track EP that embodied the sound of "boyhood pop", was released alongside the music video for its lead single "Plot Twist".[6]
Writing for Osen, Kyung Jimin commented that the EP was "impressive", remarking on its natural and friendly musical tone and likening it to "a conversation with friends during break time".[7]
^Lee, Min-ji (January 19, 2024). "'세븐틴 동생그룹' TWS, 데뷔 전 탄산음료 광고 모델 발탁" ['Seventeen's younger brother group' TWS, selected as carbonated beverage advertisement model before debut]. Newsen (in Korean). Archived from the original on August 15, 2024. Retrieved August 15, 2024.
^Kyung, Ji-min (January 19, 2024). "TWS, 데뷔도 전에 日 잡지 표지 장식..역대급 행보" [Before their debut, TWS graces the cover of Japanese magazines… an unprecedented move]. Osen (in Korean). Archived from the original on August 15, 2024. Retrieved August 15, 2024 – via Naver.
^Kyung, Jimin (January 23, 2024). "TWS, 데뷔 동시에 앨범 차트 1위 직행..발매 당일 20만 장 판매고" [TWS, debuted and went straight to #1 on the album charts.. 200,000 copies sold on the day of release]. Osen (in Korean). Archived from the original on August 15, 2024. Retrieved August 15, 2024 – via Naver.