Kotetsu no Daibouken Anime Details and Episodes The Kotetsu no Daibouken manga follows the story of Linn and Tatsuya far beyond the limited scope of the OAV series. Series info Watch free DetailsFormatMangaStatusFinishedSourceOriginalCountryJapan GenresActionAdventureEcchi TagsUrban FantasyShounenMonster GirlFemale ProtagonistPrimarily Female Cast RelatedKotetsu no Daibouken (Adaptation)