This year, one of its more unexpected swerves was the breakout hit “Ha-Chan, Shake Your Booty!” The whimsical film stars Oscar nominee Rinko Kikuchi as a passionate participant in Tokyo’s ballroom dance competitions who returns to the studio after her husband and dance partner’s death. An official synopsis for “Ha-Chan, Shake Your Booty!” reads: Haru and Luis love competing in Tokyo’s ballroom dance scene, but after tragedy strikes, Haru withdraws into isolation. Sony Pictures Classics will release “Ha-Chan, Shake Your Booty!”