Infected Malignity is a brutal death metal band and was formed by Katsuyuki (Vo), Takuma(Gu) and Yuuto(Dr), [ex-members Defiant Manner, in Tokyo, Japan in 2004. Line-up was complete after Keiichi joined later. The band recorded 3 songs demo in late 2004. However, Keiichi left the band due to personal problems in early 2005. The band recorded 9 songs for a full-length CD in mid-2005. This CD was entitled The Malignity Born from Despair and it released on Unmatched Brutality Records in in March 2006.

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