20 Seiki Shounen Tanteidan Anime Details and Episodes Kenji was born in 1960. At that time, Japan was running toward the future. In the time of the economic growth, Japanese children saw a lot of cultural… Series info Watch free DetailsFormatMangaStatusFinishedScore65/100SourceOriginalCountryJapan GenresComedyDramaMysterySlice of Life TagsSeinen Related20 Seiki Shounen (Parent Story)