Artist: Kouji (Campus Life)
A collection of sketches which began as a spinoff of another series, "Everlasting Summer Blizzard" (pool #10859). To quote Kouji's Pixiv comments (post #2254611), he's "sketched this for a change in pace."
These sketches share two things in common: they feature Fubuki, and are drawn in an almost monochrome style broken by the liberal use of blue backgrounds and shading.