A-gata-kun, B-gata-kun, O-gata-kun, and AB-gata-kun return to delve into the cultural norms linked to blood types, aided by their female counterparts. From discussing personal allure to handling subpar gifts and even the art of concealing mature content on a computer, these characters explore various facets of relationships. Be it navigating a deserted island or cohabiting in a dormitory, the distinctive reactions of each blood type to these amusing yet familiar scenarios promise a blend of humor and universality.