"It was you, big brother Kenta." Lilly looked at Kenta, who hadn't changed much after all this time, and saw his healthy expression, which made her happy, as she looked at others, particularly the prince, who had fallen down.
Big brother Kenta had apparently already made his move by the time Aria ignored the guy, but she nonetheless felt a twinge of sadness when she saw Aria standing next to Kenta and holding his hand.
Considering everything we now know, how people were viewing Kenta, and how close Aria was to Kenta, it is understandable.
She was able to identify the person as Kenta, who had gained notoriety as Aria, the sword princess of this continent's fiancée.
"Lilly and Aunt Mistiana." Kenta was astounded beyond words, as he had never expected the small book from such a small country to have a background significant enough to draw attention to Aria's birthday.