Help ;~;

So i'm playing this otome game called "Cinderella Phenomenon" (the opening is amazing btw, highly recommend you go watch it, i'll leave the link at the end)
and i completed all the capture routes except for one and i don't know why i'm reluctant to complete his route
I just need to complete his route and i'm done playing the game ;~;
( https://youtu.be/ENiuHbBSmkc
Boom)