See entry 40400080 for the technical details, and this explanation from Wikipedia:  “Love Live! School Idol Project Series is a Japanese multimedia project created by Hajime Yatate and Sakurako Kimino and co-produced by Kadokawa through ASCII Media Works; Bandai Namco Music Live through music label Lantis; and animation studio Sunrise.”  We assume “multimedia” incorporates manga.  Unopened, unused, Grade: 1