Tonari no Gal ga Miyabi sugiru!?

The new semester has begun, and the earnest high school student Kazesaki has just obtained his desired seat at the back row by the window. However, seated next to him is Tachibana-san, a gal who often has other gals gathering around her and they're always unruly. Kazesaki, whose peaceful life by the window has been disturbed, resentfully observes the behavior of these gals and notices that Tachibana-san's conduct is—unlike them—somehow more elegant...!?

(Source: Coamix, translated)