Spoiler!
Now that the kana returns to its original self that's why silvian suddenly get interested in kana after losing interest for your information when silvian cough kana when she was running away at home he becomes very interested in kana that's why he accepted the merriage praposal when kana prapose when she was not in her body and become uninterested because kana is no longer interested because she was obsessed with him at the day before of the devorce silvian came to kana rooms and said he doesn't want divorce anymore 😒😒😒 and kana slept him and said if you don't divorce I will hate you and dispise you until the death these words hit silvian very hardly and at the divorce ceremony he accepted the divorce and after the divorce arc island arc will start..