I'm sorry if this is not a good topic to here.. ^^'
But I was investigating Hikamiyama and were it would take place. The only place that came up my mind is Aokigahara, the suicide forest.
Hikamiyama mountain is the a famous suicide spot also known as the mountain of the sun god, where only those who are to die may enter, and those who commit suicide there will die in a "proper" manner
There is a Japanese manor and graves, and people who choose death are said to go there, to the "mountain of death". a sacred mountain with a large lake, the water of which flows freely throughout the mountain. It is the mountain of death, visited only by those who choose their own death... When you enter the mountains, the border between the real world and the Hidden World blur, entering the Witching Hour. (shameless direct copy form Homuranagi's writing from livestream topic ^^')
Located at the base of Mt. Fuji, Aokigahara is perhaps the most infamous forest in all of Japan. Also known as the Sea of Trees, Suicide Forest, and Japan’s Demon Forest, Aokigahara has been home to over 500 confirmed suicides since the 1950s. Called “the perfect place to die,” Aokigahara is the world’s second most popular place for suicide (the Golden Gate Bridge being the first). (here is interesting article about it: http://www.tofugu.co...orest-of-death/ )
While they both are the famous suicide places and the both of them includes mountain, forest and the lake. Interesting right? ^^ What are your thoughts?