You just rejected Akane's confession and she didn't accept it. She followed you to your apartment and stood outside the door for 15 minutes.

"Darling, darling I love you. Open the door. Please. Please. Please. I love you!"

Her gaze was unfaltering, laced with an acrid, poisonous love - there was no indication of it ever ending. She kept banging on the door, over and over.

"Please just once! I want to talk to you! Please!"