Ishuca, a kind-hearted idiot with poor health, goes to a legendary cave to die. The cave is rumored to house the demon Blood who is trapped in ice, eating whatever humans pass his way.
The never-ending adventures of Kagome and her maybe-not-really-but-maybe dog demon boyfriend, the titular Inuyasha. It a Rumiko Takahashi, so prepare to read forever, but there's plenty of adventure to be had along the way.
Koori No Mamono No Monogatari