The Cage of Superiority and Inferiority

"I don't use cheap products, so this feels fresh!" Sayama, a plain and unattractive office lady, is beauty-tested by her colleague, Misono, a self-proclaimed cool-toned girl. One day, at her colleague's request, Sayama ends up attending a group date, something she's not very good at, but...

(Source: BookLive, translated)