The King of Fighters EX2: Howling Blood is a fighting game released by Playmore, MMV and Sun-Tec for the Gameboy Advance. It is based on The King of Fighters 2000 and is the sequel of The King of Fighters EX. It was also ported for the N-Gage as The King of Fighters Extreme.
In this storyline, there are not three sacred treasures, but ten. A man named Gustav Munchausen is trying to revive the spirit of Leopold Goenitz by channeling it in a boy's body. The boy, Sinobu Amou, is one of the ten sacred treasures, and Gustav hosts the King of Fighters EX2 tournament to test his new weapon's power.