Movie
Description
May-Yu, whose full name is Jen May-Yu, is a fifteen-year-old Cerebrant originally from the Shanghai server. She is the older twin sister of Jen May-Yen. Her background is marked by tragedy: she lost her family during a battle against the Gards-orm and the failed operation to reclaim the Shanghai server. Following that battle, she was salvaged and transferred to the Cerebrum mothership Oceanus.

In terms of personality, May-Yu is described by fellow Cerebrant Kyo Sogoru as the bad-tempered one of the pair. She can be easily upset, as shown when Kyo unwittingly says something that disturbs her after the destruction of the Shanghai server. Despite this prickly exterior, she is deeply devoted to her close associate Mao Lu-Shen. She has known about Lu-Shen's feelings for Kyo even before Lu-Shen confessed them, indicating a perceptive and loyal nature.

Her primary role is as a Wizard for Lu-Shen, operating the Zegapain Garuda. She also serves as a Wizard for Kyo on occasion. In addition to her Wizard duties, May-Yu possesses the limited ability to act as a Gunner for a Zegapain, and she has done so for the Zegapain Caladrius. This makes her a versatile combatant who can switch between support and direct piloting roles when needed.

Her key relationships center on her twin sister May-Yen and her partner Lu-Shen, with whom she worked on reconnaissance missions across various servers. Through her connection to Lu-Shen, she becomes part of the wider Cerebrum forces fighting alongside Kyo and other main characters. Notably, she accompanies Kyo at one point to view the real Maihama, helping him understand the pain of reality and why he must continue to protect the illusory world.

Development for May-Yu comes through these shared losses and missions. The destruction of her home server and the subsequent salvage to the Oceanus define her transition from a Shanghai-based operator to a member of the main Cerebrum fleet. Her devotion to Lu-Shen and her willingness to pilot in different capacities show a character who adapts to the demands of the ongoing war while carrying the weight of her past.

Her notable abilities include her skill as a Wizard, providing data support and system navigation for Zegapain pilots, and her secondary Gunnery capability, allowing her to directly operate a Zegapain's weapons systems when needed.