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Synopsis
An elementary school kid dubbed with the title "shounen bat" or "lil slugger" has been going around attacking people with his bent, golden bat. Now, two detectives are investigating so they can stop this kid from making any more attacks, but they will find out soon enough... that this case is much more than they expected. (Source: Anime News Network)
Theme songs
Opening
Yume no Shima Shinen Kouen/Dream Island Obsessional Park by Susumu Hirasawa
Ending
Shiroi Oka - Maromi no Theme by Susumu Hirasawa
Theme data and video via AnimeThemes.moe