ジャニーズJr. (Johnny's Jr.) is a part of Johnny's Entertainment that focuses only on boys that are mostly younger than 25. All Johnny's Entertainment bands that are not debuted yet, are called "Johnny's junior".
すばるBAND (Subaru BAND) are 渋谷すばる (Shibutani Subaru), 大倉忠義 (Ookura Tadayoshi), 丸山隆平 (Maruyama Ryuhei) and 安田章大 (Yasuda Shota) all from the Johnny's Band 関ジャニ∞ (Kanjani8). Subaru is the vocalist and plays the guitar, Tadayoshi on Drums, Maruyama on Bass and Yasuda on guitar.
Go Morita, Ken Miyake, and Junichi Okada are MiMyCEN.
They are 'Coming Century' of V6, and 'MiMyCEN' is a special name which named on a TV program 'MiMyCEN'.
There is a only one CD that they played as MiMyCEN.