Titles is 鼠が猫に噛みついた, comes from the idiom 窮鼠猫を噛む. Let’s see what the dictinonary says:
窮鼠猫を噛む きゅうそねこをかむ (exp,id) a cornered rat will bite a cat; despair turns cowards courageous
窮鼠 きゅうそ (n) cornered rat or mouse
Going literal with the title would make it sound too awkward, so I picked another one that flows a tad better, even if not 100% accurate. With this, all the Tsukihime chapters not featured in Carnival Phantasm are done.
Other chapters that I translated are Blade and Don’t think, Imasine.