IU became the 'queen of memorization'.

On the 23rd broadcast of KBS new years special "Princess project-Rebirth of the royal", IU and 12 other female idol singers completed several missions to become the new princess.

On this day's broadcast, IU's 2nd mission was to memorize all kings of the Joseon Dynasty period. IU caught the attention by memorizing all 23 kings.

Also on this day's broadcast, IU was very active and successful in completing several of the missions. She became the princess after completing many rounds of missions but upon finding out that her prince is gag man Kim Ji Ho, she looked uneasy, making everyone laugh.

Photo Credit: KBS