9月17日,韩国媒体采访报导宣布TOMORROW X TOGETHER将在10月底于韩国回归,而新专辑将会为清凉风格路线,新专辑也是“The Dream Chapter”系列后首张专辑。[3]9月21日,所属经纪公司公开最新预告片,并宣布将于10月26日发行迷你三辑《minisode 1: Blue Hour》。[4]
10月23日,所属经纪公司公开了是次专辑《minisode 1: Blue Hour》的歌单,而当中〈날씨를 잃어버렸어 (We Lost The Summer)〉歌曲由外国歌手Charli XCX参与创作,是TOMORROW X TOGETHER首次与外国歌手合作的歌曲。[5]
2020年10月6日,所属经纪公司宣布迷你三辑《minisode 1: Blue Hour》预购量突破30万,从9月21日开始预售以来统计了约两周国内外的订单量,刷新了TOMORROW X TOGETHER自身的最高纪录。[6]
2020年10月27日, DreamUs Company宣布《minisode 1: Blue Hour》预购量突破40万,发行的专辑中最高的记录,专辑亦登上全球30个地区的iTunes排行榜1位,主打歌〈5시 53분의 하늘에서 발견한 너와 나 (Blue Hour)〉的音乐录影带在公开20小时后突破700万观看次数。[7]
2020年10月27日,主打曲〈5시 53분의 하늘에서 발견한 너와 나 (Blue Hour)〉进入MelOn 24Hits,使TOMORROW X TOGETHER成为第四位男团进入MelOn 24Hits的榜单。根据Hanteo排行榜数据,《minisode 1: Blue Hour》发行仅两日销售量突破19万张,刷新了迷你二辑《The Dream Chapter: ETERNITY》首周销售纪录。[8][9]
2024-01-11 Fall and yearning(黄英雄) ·2024-01-11 Chill Kill(Red Velvet) ·2024-02-08 GOLDEN (Weverse)(柾国) ·2024-03-07 New Jeans(Weverse版)(NewJeans) ·2024-03-07 BORN TO BE(ITZY) ·2024-03-07 Fe3O4: BREAK(NMIXX) ·2024-04-11 WHY..(BOYNEXTDOOR) ·2024-04-11 2 (POCA)((G)I-DLE) ·
2023-02-09 Candy(SMC版)(NCT DREAM) ·2023-02-09 2022 Winter SMTOWN : SMCU PALACE(SMTOWN) ·2023-02-09 SPIN OFF : FROM THE WITNESS(英语:SPIN OFF : FROM THE WITNESS)(ATEEZ) ·2023-03-09 The year of "Yes"(TWICE) ·2023-03-09 I burn((G)I-DLE) ·2023-03-09 Face the Sun(Weverse版)(SEVENTEEN) ·2023-03-09 OMG(Weverse版)(NewJeans) ·2023-03-09 Reason(英语:Reason (Monsta X EP))(Monsta X) ·2023-03-09 The Name Chapter: TEMPTATION(Weverse版)(TOMORROW X TOGETHER) ·2023-04-06 SECTOR 17(Weverse版)(SEVENTEEN) ·2023-04-06 Teddy Bear(STAYC) ·2023-04-06 BE AWAKE(THE BOYZ) ·2023-05-11 Master: Piece(英语:Master: Piece)(CRAVITY) ·2023-05-11 FACE(Weverse版)(Jimin) ·2023-06-08 FML(Weverse版)(SEVENTEEN) ·2023-08-10 I feel(POCA)((G)I-DLE) ·2023-08-10 SHALALA(英语:Shalala (EP))(泰容) ·2023-08-10 THE WORLD EP.2 : OUTLAW (MINIRECORD)(ATEEZ) ·2023-08-10 HARD(英语:Hard (Shinee album))(SHINee) ·2023-09-07 HARMONY : ALL IN(P1Harmony) ·2023-09-07 EXIST(SMC)(EXO) ·2023-09-07 ISTJ (SMC)(NCT DREAM) ·2023-09-07 Get Up(Weverse版)(NewJeans) ·2023-10-12 [PHANTASY] Pt.1 Christmas In August(THE BOYZ) ·2023-10-12 TEENFRESH(STAYC) ·2023-10-12 ASTERUM : The Shape of Things to Come(PLAVE) ·2023-11-09 SUN SEEKER(CRAVITY) ·2023-11-09 Target: ME(EVNNE) ·2023-12-07 SEVENTEENTH HEAVEN (Weverse)(SEVENTEEN)