Reimu felt the power in her legs surge her forwards and with just enough room in the low cave lept over the two imps.  Their slashing claws barely grazed Reimu's legs, not even enough to open a wound, just a scratch.  But Reimu's attack against the spell caster caught him off guard, he wasn't able to even get his spell started before her dagger slid into his throat, stopping him from ever casting a spell again.  A slash across the armor on her back had her spinning before the spell casting imp was even fully dead.  The other two imps were trying to circle, to get her between them where they could pick her off more easily.