It has been maybe 15 years since i last saw this anime. I have been trying for the last 3 years to find its name but had 0 luck sadly . Any help would be great.
This is how i remember it.
It is about a girl in her teens that is listening to piano music on her walkman while walking on a street that has trees on the sides. Suddenly ( cant remember how ) she is "teleported" to another world in which she finds a way to make a building turn into a robot that looks like a few cones put together. I remember a huge fight with another robot or robots. And i also remember that the villian was a guy that had a third crystal eye on hes forehead. The girl fought him and defeated him by slicing that crystal eye in half.
This is all i can actualy remember. Soory for my bad english i am from the third world