Nanao Wakura is a third-year student at Binan High School and president of the Earth Defense Club. He possesses medium-length, slightly wavy blond hair and brown eyes, often styled with part of his bangs falling between them. He wears the standard Binan High School uniform distinctively, leaving the jacket unbuttoned to reveal a non-standard gray vest, a white button-up shirt, and school tie underneath.

Personality-wise, he maintains a perpetually laid-back and carefree demeanor, nearly always seen with a broad smile. Situations rarely bother him, and he keeps calm. As the Defense Club leader, he views the other members as "his kids," prioritizing their enjoyment by bringing snacks to meetings. Underneath this cheerful exterior, he possesses a cunning and occasionally sadistic streak, deriving amusement from others' discomfort. He consistently teases Ichiro Dougo, fully aware Ichiro harbors a crush on him. He intensely struggles with silence and becomes stressed in quiet environments.

His role as club president is largely nominal; he proposes no formal activities beyond casual gatherings with food and tea. Contracted by the otter prince Karulus to become a Magic Knight, he transforms into the Magic Knight of the Moon, Luna Kiss!, wielding a staff topped with a crescent moon crystal. His celestial element is the moon, and his transformation phrase is "Like the moon that illuminates everything below."

Background details include a legendary first-year collaboration with Taiju Unazuki running a soft-serve ice cream booth that sold out rapidly. He frequents the Kurotama Bathhouse, often bringing tea to enjoy while bathing. Notably, he filled his class's time capsule with notes mockingly addressing classmates' personal problems or secrets, justifying this by claiming ten years would suffice for resolution. His complex relationship with Ichiro stems from the latter's longstanding admiration, which Nanao exploits for teasing. He shares significant parallels with Edelstein's Taiju, including referring to their respective groups as "children" and maintaining smiling facades. This rapport occasionally leads him to fraternize with the opposition, choosing solitude with Taiju during conflicts.

Throughout official media, his development remains consistent in his teasing persona but adapts tactically during crises. When Ata transforms into a monster, Nanao shifts focus to directly engage Taiju in combat, echoing prior Battle Lovers confrontations. His passive approach to conflicts persists, preferring verbal resolutions by others like Kyoutarou or Ryouma. Despite this, he demonstrates leadership during heightened threats, such as clashing magically with Taiju while others handle Ata's rampage.

Trivia notes include his name's etymology: "Nanao" combines "seven" (七) and "thread" (緒), while "Wakura" means "harmony/peace" (和) and "warehouse" (倉). He is incapable of tolerating silence and possesses an unexplained ability to prevent refusals to his requests. He maintains friendships across faction lines, particularly with Taiju, underscored by their shared character song, "Otagai-sama to Warattara."