Flashbacks and drama.
Before Chizuru cared more about Kazuya and now it's gone. About time when Kazuya started moviemaking. He realized one of her dreams as promised, but Chizuru be like "sleeping? meh... wanna hear confession from him personally and yes, no easy mode. It's his job to clear misunderstandings, not mine". So it's like she cared about Kazuya only when he was in miserable state. And what's sad - It's her fault for keeping Kazuya around. Seriously, she could just ignored hospital in the beggining, left Kazuya and his grandma in the room (when he was about to tell the truth), and ignored tickets to ferry ride. And many more opportunities.
Kazuya at this point can't clear anything without Chizuru's help. He is hurting Ruka (and knows it), Sumi (doesn't know), Mami (bitch gonna bitching and hating without getting over) (and disappoints Mini ). Maybe he will be better off alone.
Well okay. I'm waiting for confession prep chapters (with more thinking from Kazuya or Chizuru) or for real dumpster fire with Mami and other girls till both gran's end.