A junior who doesn't seem like the type to smoke

Yamamoto Kuromi is an unassuming underclassman in her university’s film club. Shiratori Shiori, meanwhile, is an upperclassman who has always enjoyed a happy life thanks to her good looks.

Feeling sorry for Kuromi, who has no friends, Shiratori takes the initiative and invites her out for coffee. However, Kuromi’s bored and indifferent attitude throughout their outing gradually begins to irritate her.

Then, after Shiratori happens to catch a glimpse of a certain side of her underclassman, her ordinary life slowly begins to slip off course…