Well at the beginning too when he ignored his daughter for like her whole life just bacause the mom was a villainess as if children should carry the parents sin (╯°Д °)╯╧╧ and then suddenly oh honey i care about you... too late dude too late (╬￣皿￣)
Emperor tells his terminally ill daughter who just woke up from a coma THAT DAY to walk (doesn't even provide an escort by the way) all the way to the main audience chamber in order to tell her that her brother, who she is currently in a prolonged battle for the throne with because of him, is "worried" about her (worried she woke up maybe).
Then offers her a chair.
Not to mention, he only let her sit for awhile and then asked her to walk back and rest because he's "worried"
So not only did he not go see his daughter, who was unconscious for 3 days, he dares to command her to come and see him. You're a fking grown man with the most power in the whole country, you can fking walk to your daughter's palace