Help, i remember this manga/anime, it's not much but here i go. So basically there was thi...

Help, i remember this manga/anime, it's not much but here i go. So basically there was this guy/girl who moved in or was exploring there attic. There were painting i think, there was also a phone. I remember they guy/girl was phoning the old owner i think from the past and then the guy/girl met up with the persons mother, i also remember a diary. Sorry for not alot <3