Of course Suzu is going to try saving that boy alone. That's how her mother died. Trying to save a total stranger. Nobody could have stopped her, it's what she learned to do. If you're fixated on such detail and can't stomach it, you're ignoring the whole story and what the scenarist has been developing in his other related stories.
Belle
(2021)
People who rate badly that movie haven't seen the other related ones.
27 July 2021
Warning: Spoilers