Maria Sashide

Miyako Hoshino is a college student who is very shy around strangers. When her younger sister Hinata brings home her classmate, Hana Shirosaki, Miyako becomes enchanted by her cuteness and begins having her dress up in cosplay in exchange for snacks. The series follows Miyako as she grows closer to Hana, along with Hinata's other friends.

Nijigasaki High School is known for their diverse subjects and the freedom they give to students. Second-year student Yuu Takasaki has been turned on to the charms of school idols, so she knocks on the door of the School Idol Club with her friend, Ayumu Uehara. Sometimes friends, sometimes rivals, the members of this club each contribute their own thoughts and motivations to the group. (Source: Funimation)

Ayumu returns from London with a girl named Isla, who wants to be a school idol. (imdb)

Hana, Hinata, Noa, Koyori, and Kanon are always good friends. Today, they are having a party at home with Miyako's homemade sweets! The flower-shaped cookies look just like the hair ornament worn by Hana. The ornament was a precious treasure that Hana received from her grandmother when she was little, and everyone was intrigued by the story. As "practice for the school trip," they decide to go visit Hana's grandmother's house! The "first" outing for everyone is about to begin. (myanimelist.net)