Episode 1

S1 E1: A chance encounter draws unassuming high school student Yumi Fukuzawa to the Yamayuri Council, the student governing body of the Lillian Girls' Academy. This all-girls Catholic school has a unique system that pairs girls together to help one another through the years. This system has yielded many long-lasting friendships. But Yumi's unexpected proposition by the school's most popular student and soon-to-be council head, Sachiko Ogasawara, is unlike any in the school's long history. The only question remaining is if Yumi will accept Sachiko's offer.