Set in Tokyo, it's January 29, 2030. High-frequency resonance is observed in the vicinity of Tokyo, and the red fog rolls into the city. Those who hear the sound, humans and animals alike, pass out, losing consciousness. Everything shuts down in Tokyo, believing that the fog is carrying an unknown virus that causes an epidemic. However, six days later, after the incident, people wake up as if nothing happened. After that, Tokyo's sealed-off city sections gradually return to normal. However, since the high-frequency resonance, some bizarre events start to happen, and people find themselves being pulled deeper into more mysteries. Meanwhile, young people start to become aware of themselves and release their power hidden in their blood, discovering themselves as vessel of wisdom blood. Together, being led by something unknown, they meet, communicate, and face the unavoidable circle of fate, sacrificing their own lives. (Source: MAL News)

At Fujisaki Girls Academy, student council president Natsuo Maki is the epitome of grace and perfection, admired by all the young girls who attend the school. One day, Riko Kurahashi walks into the student council room on an errand, only to discover Natsuo practicing her kissing techniques on a pillow, an act that is neither graceful nor elegant. Riko soon discovers that Natsuo desires more romance in her life, leading her to practice romantic situations in secret. Sympathizing with her, Riko agrees to help Natsuo with her love research. Named Love Lab, the project practices the essentials of love and romance, such as bumping into each other accidentally and holding hands. Soon, the entire student council joins in on the fun in the Love Lab too! Through their research and real life encounters, what will they learn about romance? Weaving together funny characters and comedic situations, Love Lab builds a story of friendship and romance, while never missing a beat with the laughter.

As another year begins at Yuigaoka Girls' High School, ushering in a fresh batch of students, the school idol club Liella! is excited to expand their membership. However, Liella! is extremely popular due to the astounding talent they have continuously displayed; thus, new students lack the courage to even consider approaching the club, fearing the rigorous training that might lie ahead. Amid her worries, club leader and co-founder Kanon Shibuya meets first-year student Kinako Sakurakouji and tells her about the world of school idols. This leaves Kinako in awe, but being fairly average herself, she feels she would not be capable of matching the spirited performances of the brilliant Liella! members. Nonetheless, Kinako receives encouragement to join the group and comes to share their dream of reaching for the stars once again in the grand Love Live! Competition.

Chika Takami, a self-proclaimed normal girl, has never been involved in any clubs and lacked any notable talents. However, after a visit to Tokyo, she discovers a stage where even an ordinary girl like her could shine—the world of school idols. Inspired by the former superstar school idol group μ's, Chika is determined to start her own school idol club in her seaside hometown at Uranohoshi Girl's High School. But even before gathering any students to join the group, the aspiring school idol finds her greatest obstacle to be student council president Dia Kurosawa who stands firmly against the creation of the club. Just when it seems there is no hope, Chika meets Riko Sakurauchi, a transfer student from Otonokizaka High School, home of μ's. Somewhat shy but a talented piano player, Chika believes her to be a promising recruit, though convincing her to join is easier said than done. In spite of that, Chika chooses to charge forward and overcome the obstacles keeping her from forming a school idol group that shines as bright as the nine that came before her.