Hello,

I saw film on youtube years ago, i think it is a japanese film, the main characters are a woman and 2 men , i think there all friends.  They are in a mental institution and manage to escape, they walk along a high wall  as a dog walks below, the woman has a black umbrella as she walks along, they manage to get away and i think the pass a school, the children sing song of jesus christ, later on  they seem to depart from each other, towards the end one man commits suicide.