A Man Called Ove by Fredrik Backman
The book centers around a curmudgeonly widower whose strict routines and grumpy demeanor hide a deep sadness after the loss of his wife. His solitary existence is disrupted when a boisterous young family moves in next door, leading to a series of comedic and heartwarming events that gradually thaw his icy exterior. Through these interactions, the protagonist's past is revealed, and he forms unexpected friendships that give him a new lease on life, showing that even the most steadfast loner can find community and purpose when least expected.