A fighting game made for Japanese audiences, currently this is also one of it's most popular ones. Based on the eroge/hentai game (depending on the version), Tsukihime , this fighter made by French Bread (and Type-Moon itself for ReAct and after) has a fighting system similar to a simiplified Guilty Gear but with a tighter gap for air combos and the shield being a parry/super counter.
While the main story is that Shiki Tohno, the lead role of Tsukihime
and original sayer of "a cat is fine too
" , must help the heroine Sion from turning into a vampire
, this is unknown to most who haven't played it outside of the arcade since the story is replaced by a typical "powerful being gets bored" follow-up.
"This is Melty Blood, one of the examples that anime/doujin games do not have to suck."