4YU

 is the fourth studio album by Sakai Yu. It through AUGUSTA RECORDS.

Disc 1

 * 1) SO RUN
 * 2) Doki Doki
 * 3) WALK ON AIR
 * 4) Gekoku Joucho (下剋情緒)
 * 5) Aru Guitarist no Koi (あるギタリストの恋)
 * 6) Ai wa Isogazu -Oh Girl- (愛は急がず -Oh Girl-)
 * 7) Summer Again (サマーアゲイン)
 * 8) SELFISH JUSTICE
 * 9) Tokyo SOUL (トウキョーSOUL)
 * 10) Ai wa Binetsu (愛は微熱)
 * 11) Jasmine (ジャスミン)

Disc 2 "Sakai Yu Cover Collection"

 * 1) Tsutsumikomu you ni... (つつみ込むように…) (MISIA)
 * 2) Konya wa Boogie Back (NICE VOCAL) (今夜はブギーバック (NICE VOCAL)) (Ozawa Kenji featuring Scha Dara Parr)
 * 3) ACROSS THE UNIVERSE (THE BEATLES)
 * 4) One more time, One more chance (Yamazaki Masayoshi)
 * 5) Tooku Tooku (遠く遠く) (Makihara Noriyuki)
 * 6) The Stranger (Billy Joel)
 * 7) Seppun (接吻) (ORIGINAL LOVE)
 * 8) Yosakoi Naruko Odori (よさこい鳴子踊り) (Kochi Prefecture Folk Song)
 * 9) What's Going On (LIVE at Billboard Live) (Donny Hathaway)
 * 10) PAPER DOLL (LIVE at Billboard Live) (Yamashita Tatsuro)