Aggretsuko: Season 4 Anime Details and Episodes The fourth season of Aggressive Retsuko. Series info Watch free DetailsFormatOnaStatusFinishedEpisodes10Duration18 minSeasonFall 2021Score72/100StudiosFanworksSourceOriginalCountryJapan GenresComedyMusicSlice of Life TagsPrimarily Adult CastWorkOffice LadyAnthropomorphismFemale ProtagonistUrbanAnimalsChibiMetal MusicPrimarily Animal Cast RelatedAggretsuko: Season 3 (Prequel)Aggretsuko: Season 5 (Sequel) RecommendationsAggretsukoAggretsuko: Season 2 CharactersRetsukoHaidaFenneko (Supporting)Tsunoda (Supporting)Kabae (Supporting)