"Today's Class 2-5 OVA" is a series of short stories that take place in Class 2-5 of an elementary school, serialized in the popular Japanese magazine "Weekly Young Magazine's" supplementary booklet. The stories are structured in hourly units, corresponding to the typical one-hour class periods in Japanese schools. The content primarily revolves around the stories of upper elementary school boys and girls going through puberty, as well as their respective curiosities about sexuality. The protagonist of the story is Satō Ryōta, who often experiences somewhat risqué little incidents at school.