The share a similar theme of reincarnation where the MLs meet their reborn love ones when they are much older. They also reborn as a male in both. The difference is that BJoTO is a movie and more realistic.
Both movies are about women who suffer are abused by the men and people around them. Both movies are also about revenge. Both movies also have sismance
Both kdramas have sad and lonely leads, have similar dynamics of leads trying to support each other . They both have a mystery subplot and ex partners trying to separate the leads
Both kdramas have a similar atmosphere and realistic vibes. Both dramas have cheating leads and in both dramas the leads are depressed and trying to find themselves
In snowman both the sisters fall in love with the ml while in autumn shower it is best friends. In both dramas the leads face criticism for their relationship and struggle to be together. Difference is that in snowman, the sister doesn’t wake from her coma while in autumn shower the best friend does. Snowman is a bit more light.
They both have similar vibes (tsq being more tragic). In both dramas the leads meet when they were younger, became friends, and suddenly lost contact. They both meet in the future without realising who they are. The both also have a similar age gap.