So I didn't read the novel yet cuz I forgot to and only read the summary and it goes like the girl is a (transmigrator/reborn?) And she's supposed to take care of this guy who was obsessed with (math? I think) and the guy fell in love with her. In the guy's last life he was also obsessed with math but there's wasn't the MC to cheer him on so he became fixed only on math when the guy won an award for it he committed suicide. That's what I remember from the summary anyone know what it is?