She tries to get him to stay because they meet his grandmother in the letter too , meaning she lives through in that future .
The future letter wanted Kakeru to stay with her on New Years despite his grandmothers condition , and he refused to do so .
She tries to get Kakeru to stay because they meet Kakeru 's grandmother in the letter too , meaning she lives through in that future .
The future letter wanted Kakeru to stay with her on New Years despite his grandmothers condition , and he refused to do so .