Atsuize Pen-chan Anime Details and Episodes Watanabe Yuuichi, also known as Pen-chan, loves mahjong. It's just too bad that he's not very good at it. Follow Pen-chan's wins and losses (mostly… Series info Watch free DetailsFormatMangaStatusFinishedScore56/100SourceOriginalCountryJapan GenresSlice of LifeSports TagsMahjongGamblingSeinenYakuzaBoard GamePhilosophy RecommendationsAtsuize Tenma!Ten: Tenhou-doori no KaidanjiMukoubuchi: Kou-Rate Uramahjong RetsudenHERO: Akagi no Ishi wo Tsugu OtokoTetsunaki no KirinjiTobaku Datenroku KaijiYamima no Mamiya