Kirigiri Sou

Takekuni Kitayama

The main character, Kōhei Matsudaira, is a normal college student with nothing unusual about him. While taking a shortcut home, he gets lost, and ends up driving through a thick forest. Driving on the road that's difficult to see, Kōhei meets a mysterious, beautiful girl named Kyoko Kirigiri, and offers to give her a ride in his car.

However, their drive together does not last long. Kōhei gets into an accident, and the two seek refuge in a nearby Western-style house. This house was actually where Kyoko was headed, but it has a strange atmosphere and a huge tree growing inside.

The two are assaulted by a creepy suit of armor, a skull buried in the flower bed, and a girl who's the spitting image of Kyoko.