Jen May-Yu

15 years old. The older twin sister of Mei-Yen. Primarily serves as a wizard for Lu-Shen but has also boarded Altair as Kyo's wizard. She is from Shanghai and has completely lost her family due to battles with Gards-orm and the failure of the Shanghai server recapture operation. Since hearing Kyo's thoughtless remarks, unaware of the situation at the time, she has been harsh towards him, but later reconciles when she serves as Kyo's wizard. Kyo describes her to Ryoko as "the one with the worse personality" among the twins.

Although not mentioned in the anime, it is revealed in the CD drama that she had a one-sided love for the "previous" Kyo. Her prolonged anger towards the "current" Kyo in the anime is due to the gap between him and his former self. In the CD drama, it is also revealed that she becomes extremely tense during battles, to the point of crying and being unable to function as a wizard.

In contrast, in the movie 'ADP,' she is shown to be acting alongside Mei-Yen and Lu-Shen even before Kyo awakens as a Celebrant. Unlike Mei-Yen, she has a bob cut hairstyle and hates Chinese food.