Works similar to Seika Jogakuin Kounin Sao Ojisan are popular for several reasons:

On the morning of the cultural festival, second-year student Akari found one of the notebooks under the azalea hedge: a page of tiny, meticulous handwriting listing the names of students, clubs, and a single column of numbers. At the bottom, a single sentence: "Keep them safe. — S."

: Originally sold at Japanese subculture conventions (like Comiket) and specialized retail stores (such as Melonbooks or Toranoana).

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Physical copies of the standard tankōbon and localized standalone episodes are regularly traded or archived through global marketplace platforms such as eBay or dedicated domestic hobby shops like Melonbooks and Toranoana.