Wendy is a shy and soft-spoken girl in the last year of high school, her only friends are Sophie from the same class and Katy, an underclassman.
One night, her friends forced Wendy to come to a party the most popular girl in high school hosted, Wendy was somehow invited to it.

Everything went well until her friends abandoned her for their other friends and Wendy left alone to wonder aimlessly at the party.

[From Itch.io]