Spoiler from the movie
So, there are rules to anyone getting hurt. The ML, after he learns truth from mom and she dies, leaves his job and moves near FL to break the code
He finds the rule of 10 -
People who are hurt have been within 10m of radius from her. They have spent 10 or more minutes with her, and spoke 10 or more lines... so if you do any one of these you get hurt. Severity increases as interaction increases.. so e.g. talking leads to bigger accident than just being near her
4th rule is , everyone confessed romantic love to FL and triggered severe accidents
so, this leads to funny scenarios where ML tries to befriend FL by timing their interactions etc..
Overall, at the end, he interviews all affected people.. and arrives at the 5th rule that at the end of the day, all of these rules are dictated by how FL feels... so if she loves back someone who loves her then she will actually become a protector.
He takes the risk.. goes and proposes her.. and the worst accident starts to play out until FL also confesses in her desperation and agony... and voila.. accident stops midway
Absolutely amazzing movie