about a man who picks up a teen that has had bad luck and trauma from his past where his whole family was killed in a car accident and he saw his brother's head get smashed thru from a beam of the truck. In the current his apartment burns down and his landlord blames him for the bad luck.
For some reason i didn't save the manga properly.
Theres also another couple in the manga who's story was first.
http://www.mangago.zone/read-manga/love_mode/
Maybe? I think it is the second couple you are mentioning.
Trying to find this shoujo manga based on an english novel about a red haired girl who runs away from the country side since her step father is abusive to her and her mother and she got raped by some assholes. So she runs away to the city and helps out a hair place. She turns out to be really good at washing hair and also has a knack for photography. The famous photographer gets interested in her.
Love Meca senseis work!!!