TOKYO — “Love Live! The School Idol Movie,” a feature animation based on a multimedia project that encompasses a TV anime show, comic, music CDs and live concerts, opened at No. 1 in Japan for the June 13-14 weekend.

Bowing on just 121 screens, with Shochiku distributing, the film about teenaged girls who form an idol group to save their school from closing earned $3.42 million on 252,000 admissions. The film is expected to finish near the $20 million mark.

Debuting at No. 2 was “Our Little Sister,” Hirokazu Koreeda’s Cannes competition entry about four sisters who form an unusual household in the seaside town of Kamakura. Opening on 323 screens, the film took in $1.86 million from 182,000 admissions. With Gaga and Toho as co-distributors and a full-scale media blitz by Koreeda and his four stars, the film looks likely to pass the $10 million milestone.

Last week’s top-ranking films, led by No. 1  “Tomorrowland,” slipped down two places to occupy the Nos. 3-8 slots.  Naomi Kawase’s “An,” which also screened at Cannes, held onto its No. 10 rank, while reaching the JPY200 million ($1.6 million) mark on 94 screens with Elephant House distributing.