Does the flying goat Dream about the Tree of Life?

Outside of suburban Tokyo, there is a building named the Green Leaf Mansion, an apartment with a tea house. One day in May, the main character inherited the place from his deceased grandfather, and came to this place. He will meet and befriend many people, and have an unimaginable experience...

Trivia
The weird English captialization from the title is taken from the game's logo, and is a way to reflect the font emphasis used in the Japanese logo.