Zaki had just arrived in Country J, heavily guarded. His first day as the president of Red Empire was challenging, as expected, but his busy schedule didn't take Hinari off his mind. He had planned to finally meet Hinari's parents and tell them that he will be marrying her but because of the news about old man Zuzuki's sudden critical condition, it wouldn't be proper for him to go and ask her for her hand right now. Zaki's plan, therefore, was put on hold for now until the old man was better.
But in the end, Zaki still decided to go. He told Sei that he would go, along with their parents, to visit the sick, old man. Their purpose won't be to talk about the wedding yet but Zaki and his parents' presence would be enough to show them how serious Zaki was towards Hinari. But that actually wasn't the only reason why Zaki insisted on going.