Fourth season of the Ketsuekigata-kun! series.

The anime adapted from the manga remake version of the Korean webtoon "A Simple Thinking about Bloodtypes" involving the faceless and nameless characters of four different blood types to discuss about popular anthropomorphized blood types (the stereotypes about the blood types) in Japan and Korea.

Second season of the Ketsuekigata-kun! series.

Third season of the Ketsuekigata-kun! series.