Kamaitachi ~Hiiro no Sakeme~

Main character comes from an ancient clan and lives with three Shinto maiden sisters. He enters university and visits his home town. On the way back he learns about a strangely cruel murder - it looks like someone is trying to awaken Kamaitachi from the legend. He sees the rift that no ordinary person can see. He needs to enter it and oppose this occult plague himself.

[From vndbreview]