My Grandmother Asked Me to Tell You She's Sorry by Fredrik Backman 

Backman’s masterpiece – almost eight-year-old Elsa loves her grandmother, and her grandmother loves her fiercely.  Her grandmother is an odd duck who tells fairy tales from the land of almost asleep and defends Elsa like no one else.  But her grandmother is sick and dies.  Elsa is given a quest to deliver letters, which she must find to the people who live in her building.  She finds out it really is her building because her grandmother owned it and left it to her.  We meet people who were rescued by the grandmother when they were just children, except for one woman who was rescued after a tsunami killed her husband and two sons.  There is Wolfheart who is a warrior who doesn’t like to fight.  There is Britt-Marie, who took care of Elsa’s mother while her grandmother was off saving other people.  There is a set of brothers who were both in love with the same woman.  There is a family taking care of their grandson while hoping their son gets some help.  And there’s a wourse who is a hero.