• Book Name: Evil Heart Manga
• Alternative(s): イビルハート; 千锤百炼
• Genre(s): Drama Martial Arts
• Author(s): Taketomi, Tomo (Story & Art)
• Year 2005
• Status: Ongoing Download Manga
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Summary: Masaki Umeo is a middle schooler with a nasty temper. Because of his temper, he is causing all sorts of problems and is constantly involved in fights causing his sister to worry about his well-being. One day, he stumbles upon an Aikido class which he becomes interested in, but soon dismisses it until he meets Daniel- an english teacher from Canada. Daniel teaches Umeo about the way of Aikido in hopes of giving Umeo a different outlook in his life, but it isn not that simple because there is a dark reason behind Umeo s temper...