"One Day" is a song by the South Korean boy groups 2AM and 2PM, Oneday. It was released on July 4, 2012 as 2AM's third Japanese single[1] and 2PM's fifth Japanese single.[2] The song is the main theme song for the documentary movie "Beyond the Oneday ~Story of 2PM & 2AM~", which was broadcast in Japan starting on June 30.[3][4] 
  Release
 The single was released in twelve editions:  
 - Type A is a CD + DVD,[5]
- Type B is the CD single with a front cover artwork of 2PM's member Jun.K,[6]
- Type C is the CD single with a front cover artwork of 2PM's member Nichkhun,[7]
- Type D is the CD single with a front cover artwork of 2PM's member Taecyeon,[8]
- Type E is the CD single with a front cover artwork of 2PM's member Wooyoung,[9]
- Type F is the CD single with a front cover artwork of 2PM's member Junho,[10]
- Type G is the CD single with a front cover artwork of 2PM's member Chansung,[11]
- Type H is the CD single with a front cover artwork of 2AM's member Changmin,[12]
- Type I is the CD single with a front cover artwork of 2AM's member Seulong,[13]
- Type J is the CD single with a front cover artwork of 2AM's member Jo Kwon,[14]
- Type K is the CD single with a front cover artwork of 2AM's member Jinwoon,[15]
- Regular edition is the CD single with a bonus track.[16]
Composition
 "One Day" is an original Japanese song, composed by Yu Shimoji, Faya, Super Changddai and Michael Yano. The B-side "No Goodbyes" is an original Japanese song, written and composed by 2PM's MinJun and Emyli. "Angel", CD Only bonus track, is originally a Korean song from 2PM's debut single Hottest Time of the Day. 
 Track listing
 Type A to K track list[5]| Title | Lyrics | Music | 
|---|
| 1. | "One Day" (2PM & 2AM) | Super Changddai, Faya, Yu Shimoji, Michael Yano | Super Changddai | 3:42 | 
|---|
| 2. | "No Goodbyes" (2PM & 2AM) | Jun.K, Emyli | Jun.K | 3:36 | 
|---|
| 3. | "One Day" (Without main vocal) |  | Super Changddai | 3:42 | 
|---|
| 4. | "No Goodbyes" (Without main vocal) |  | Jun.K | 3:33 | 
|---|
| Total length: | 14:33 | 
|---|
CD only track list[16]| Title | Lyrics | Music | 
|---|
| 1. | "One Day" (2PM & 2AM) | Super Changddai, Faya, Yu Shimoji, Michael Yano | Super Changddai | 3:42 | 
|---|
| 2. | "No Goodbyes" (2PM & 2AM) | Jun.K, Emyli | Jun.K | 3:36 | 
|---|
| 3. | "Angel" (2PM - Live from JYP Nation in Japan 2011) | Kwon Tae-eun, Jang Geun-yi | Kwon Tae-eun | 4:06 | 
|---|
| 4. | "One Day" (Without main vocal) |  | Super Changddai | 3:42 | 
|---|
| 5. | "No Goodbyes" (Without main vocal) |  | Jun.K | 3:33 | 
|---|
| Total length: | 18:39 | 
|---|
DVD[17]| Title | 
|---|
| 1. | "One Day" (Music video) |  | 
|---|
| 2. | "One Day" (Music video - Movie version) |  | 
|---|
Charts
 Oricon
    | Oricon Chart | Peak | Debut sales | Sales total | 
  | Daily Singles Chart (1st day of release) | 5 | 29,721 | 66,224+ | 
  | Daily Singles Chart (7th day of release) | 3 | 1,286 | 
  | Weekly Singles Chart | 5 | 54,734 | 
  | Monthly Singles Chart | 13 | 64,911 | 
  | Yearly Singles Chart | 123 | 66,224 | 
 Other charts
 One Day
  Release history
  References
  External links
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