Renji Hiiragi is one of a chosen group of mages known as the Night Wizards. Their job is to make sure that evil doesn't get into our world, keeping it hidden from the eyes of {{Muggles}}. This is all well and good, except Renji ''really'' doesn't want to do the whole "saving the world" thing, no matter how good he is at it. He has a reputation as "the Falling Man", and is constantly missing class. He wants to make sure that he actually shows up at school and gets work done, but his party's leader Anzelotte just keeps calling him away and not giving him any other choice in the matter.

One day, Renji is told that he will have to watch over NewTransferStudent Eris Shiho. Eris is waiting for her birthday, at which point she'll finally meet the MysteriousBenefactor who's been aiding her since she was young. After getting dragged into the Astronomy Club, Eris finds herself joining Renji's party on a quest to recover the seven Jewels that her bracelet is tied to. At the same time, a dark mage -- Bell Zephyr -- begins to move.

The series aired in fall 2007.
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Tropes in ''Night Wizard'' include:
* BackFromTheDead: [[spoiler:Kureha is revived by Anzelotte and Lion.]]
* {{BFG}}: Akari's weapon of choice. Not only are the shells almost too large to carry one-handed, the gun itself can fly. In episode 9, she uses an even bigger one against Bell Zephyr's forces.
* BookEnds: The show begins and ends with Anzelotte reciting her CatchPhrase and dragging Renji off on a mission.
* BreakTheCutie: Poor Eris. She learns that [[spoiler: she is the reincarnation of Shaimal, the God of Destruction; all of her memories before meeting Renji and the others were fabricated; of her friends, only Renji stays with her and he ends up fighting Akari and (almost) Kureha; and finally, just as Kureha joins them, she is killed by Kirihito, who then reveals himself to be Eris' mysterious benefactor and planned everything so that she'd fall into a DespairEventHorizon and awaken Shaimal within her.]] She gets better though.
* ButThouMust: Anzelotte. "For the request which I am about to ask of you, please reply with 'hai' or 'yes'" ("'okay' or 'yes'" in the subs) is how she asks for favors, [[EstablishingCharacterMoment is her first line of dialogue in the show]], and is, for all practical purposes, her CatchPhrase. Renji keeps ''trying'' to say no, but is always ignored and sent on the mission anyway.
* CatchPhrase:
** Nightmare says [[GratuitousEnglish "Dream"]] all the time, but since he's Japanese, it's something like "Durimu".
** Kureha says "Hawawa~" when stressed, excited, or anytime.
** Anzelotte's is mentioned above.
* ChekhovsClassroom: Science class saves the day as far as one of the Jewels is concerned.
* ClubPresident: The Astronomy Club, led by Kureha. It's really more of a convenient way to gather the Night Wizards in the school.
* DoItYourselfThemeTune: Ui Miyazaki, Eris's voice actress, sings the opening theme.
* EmotionlessGirl: Akari. Her face doesn't even change when she is angry.
* EnemyMine: Bell does end up joining with the heroes in the end, if only for one battle.
* EvilOverlord: Bell Zephyr fits many of the standard Overlord tropes.
* GottaCatchThemAll: The seven Jewels of Virtue, a group of {{Cosmic Keystone}}s that are very, very important.
** Unfortunately, [[spoiler:the Jewels turn out to be an UnholyHolySword -- they're fragments of Shaimal's power, and when they're brought together, Shaimal reawakens within Eris.]]
* {{Hammerspace}}: The Lunar Robes can be used to store items. [[MundaneUtility Eris uses hers to carry lunch.]]
* IJustWantToBeNormal: Renji's extreme desire to actually finish his education. He's smart enough to get it done, he just never gets a chance to actually ''be'' in school.
* InstantRunes
* JourneyToTheCenterOfTheMind: One episode takes place in Eris' dream world, and introduces Nightmare.
* {{Miko}}: Kureha. This extends into her fighting style, where she uses a crossbow loaded with charms.
* NewTransferStudent: Eris
* NoOneGetsLeftBehind: Anzelotte's willingness to abandon Yui in order to secure the Jewel of Faith caused Kurusu to desert her cause. [[spoiler: Renji's determination to gather the Jewels without sacrificing anyone is what inspires him to entrust the Jewel to the protagonists.]]
* NoodleIncident: What is Hiiragi's secret Kureha keeps teasing him with?
* OrphansPlotTrinket: Eris' bracelet
* ReallySevenHundredYearsOld: Both Anzelotte and Bell are hundreds of years old, but look young and active.
* RedSkyTakeWarning: More like Red Moon Take Warning
* TheReveal: [[spoiler:Kirihito is the BigBad.]]
* WakeUpGoToSchoolSaveTheWorld: Renji, although Anzelotte rarely lets him go to school
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