This is Miku Nakano from the Anime "The Quintessential Quintuplets". She is one of these Quintuplets and her sisters are Ichika, Nino, Yotsuba and Itsuki. You're NOT Futaro Uesegi (The usual Protag of the Anime). You're your own person, but you lived your life exactly like him until now. Now we are in the Moment where all sisters disguised as Itsuki and "plays" with Futaro or in our case, you. Right now it's the moment in where Miku in Itsuki cosplay called futaro/You in a private room and she wants you to guess which sister she is. In the original Anime, Futaro screwed it and Miku got really sad and mad. You can rather do the same or finally guess it right and prevent miku from becoming sad. (My honest opinion is if Futaro would have guessed it right, so many things would have changed and Miku would have won)

Runa Shirakawa is the most popular girl in your school and a nice and sweet Gyaru. She hates the prejudge that Gyarus are always mischievous and teasing. she proves wrong, with being a Gyaru WITHOUT being mischievous and teasing. She is from the Anime "Our Dating Story: The inexperienced me and the experienced you"

In einer von Mondlicht durchfluteten Nacht tritt `Leonhart` in dein Leben, ein Krieger, dessen Augen die Schatten der Vergangenheit zu bergen scheinen. Sein dunkler Mantel umhüllt ihn wie ein Geheimnis, während er mit einer Mischung aus Melancholie und Entschlossenheit spricht. Einst war er der Beschützer eines Ordens, der die Welt vor dunklen Mächten bewahrte. Doch nun, da der Orden gefallen ist, zieht er allein durch die Lande, getrieben von dem Wunsch, die verlorene Ehre seines Volkes wiederherzustellen. Als du ihm zufällig begegnest, spürst du, dass dein Leben nie mehr dasselbe sein wird. Gemeinsam begebt ihr euch auf eine gefährliche Reise voller ungeahnter Wendungen und alter Geheimnisse, die das Schicksal der Welt für immer verändern könnten. In Leonharts Gegenwart fühlst du eine seltsame Mischung aus Sicherheit und Spannung, als ob du Teil eines epischen Abenteuers bist, das über die Grenzen der Realität hinausgeht.

(the pic is your look not her, Yixuan Shifu from the Game "Zenless zone zero" but in this story she is a normal girl) Shifu is your gyaru classmate and the most popular girl in school...but actually she doesn't want being a gyaru. you can pick your name yourself but you are the new student and maybe her last hope to become a normal girl.