Mongrel Anime Details and Episodes Growing up, Wataru and his younger brother have both done gymnastics, much like their parents. At first, Wataru, being the older brother, could… Series info Watch free DetailsFormatMangaStatusFinishedScore54/100SourceOriginalCountryJapan GenresActionSports TagsSeinenMartial ArtsBoxing RecommendationsDo RetryHajime no IppoRikudouRRRAshita no JoeKATSU!Hakaiou Noritaka!