boss in her own route Powerd Ciel (): Kumi Sakuma In the original Melty Blood, only six (Sion, Arcueid, Ciel, Akiha, Kohaku & Hisui, and Shiki Tohno) of the characters above were available for play, with eight more being unlockable through story mode. However, in a later update released for the game (the "Nero" patch), all the characters are available from the start. The reasons for this are slightly unclear; it appears to be the result of a legal misunderstanding whereby Type-Moon mistakenly thought they would no longer be allowed to produce updates/patches, and thus made a "last patch" which unlocked the characters as a sort of gift for the fans. Whatever the case, Type-Moon has left these characters available throughout all subsequent releases. In addition, Aoko and Kouma were both added to the game as of Act Cadenza, although Aoko was an unplayable boss character in previous versions. Act Cadenza also changed the given names of several characters, generally to make it easier to identify the doppelgangers by name. Sion later appeared in the French-Bread's spiritual successor of the series, Under Night In-Birth, under her middle name Eltnum. Release Melty Blood (2002) The original Melty Blood was announced on October 8, 2001, at , the dōjin convention hosting only Tsukihime content. The plan was suggested by Nobuya Narita of Watanabe Seisakujo (French-Bread, from 2003). Kinoko Nasu wrote scenarios and Takashi Takeuchi designed characters. Watanabe Seisakujo developed the game system and pixel arts. They were known as the creator of parody games, but Nasu requested not to break the style of Tsukihime. They had difficulty thinking of attacks because original characters didn't have an attractive skill suited for the fighting game. They also worked hard to create frames of animation exceeding Street Fighter III. The full version of Melty Blood was released in December 2002 for Windows. An expansion patch, Re-ACT released two years later in May 2004, and an update, Re-ACT Final Tuned, released in July 2005. An arcade version of the series, Melty Blood Act Cadenza, was later developed by Ecole Software and released in March 2005. Later, a PlayStation 2 version of Act Cadenza was released on August 10, 2006. A Windows version, Melty Blood Act Cadenza Ver.B, was also released on July 27, 2007. The series' newest game, Melty Blood Actress Again, was released on September 19, 2008. Melty Blood Re-ACT An expansion to the original