The Hello! Project shuffle units (シャッフルユニット, shaffuru yunitto) were an annual event in the Japanese idol collective Hello! Project that started in 2000. The idea was to shuffle up the existing Hello! Project groups and soloists (e.g. Morning Musume, Country Musume, Aya Matsuura, Melon Kinenbi, and others) into one of three groups for a season-long collaboration to see which shuffle group can sell the most singles.
Each year's shuffle had a common theme: 2000's shuffle group theme, for example, was color and the groups were Akagumi (red) 4, Kiiro (yellow) 5, and Aoiro (blue) 7. Despite the commonality in theme and same B-side song, each group tends to sing a different style A-side song (details below).
Eventually, this became more of a tradition than a competition to outsell. In 2003 the three groups' songs were merged and sold as one single/mini-album. In the fall of 2004, only one unit was formed: The Hello! Project All-Stars, a collaboration of all 46 contemporary Hello! Project members to perform "All for One and One for All!".
Dear John, I'm sorry I can't do this anymore
You're not the man I fell in love with
And I have to move on with my life, goodbye
Goodbye, goodbye, goodbye cool
You were the one who'd never leave
Beautiful eyes, you seemed so free
Touching your face I felt complete
Holding your hand my heart would weep
So everything that came out of your mouth was full of lies
You looked me right dead in the eyes
You'd call your girlfriends and tell them that I abused your trust
You did your best to demonize
You were the one who'd never leave
Beautiful eyes, you seemed so free
Touching your face I felt complete
Holding your hand my heart would weep
You were the one who raped my soul
Beautiful lies, you stole my hope
Touching your ass, I scratch the skin
Holding your neck, I tie the rope
(Pulling it tight)
You were the one who'd never leave
Beautiful eyes, you seemed so free
Touching your face I felt complete
Holding your hand my heart would weep
You were the one, the one for me
Now that you're gone it's hard to see
So much of me has gone away
There's no need to stay another day
But someone's got to pay
But someone's got to pay
But someone's got to pay
But someone's got to pay
But someone's got to pay
But someone's got to pay
But someone's got to pay