本作のヒロインで、白樺学園に通う少女。つややかな長い髪と清楚な顔立ちで、男子の間では学園でも5本の指に入るアイドル。しかし本人にはまったくその自覚が無く、また恥ずかしがりな性格からまだ誰とも付き合ったことがない。それどころかほとんどの男子とまともに会話も出来ない。のほほんとした性格で、かなりのお人好し。重度の運動オンチで、何もないところで転んだりすることもしばしば。強い思念の持ち主（＝強い魔力を持つ者）としてエーテルランドの女王に認められ、魔法少女に変身して違反者と戦うことになる。「違反者さんたちは私が退治します！」触发词：Kusunoki Sae 身体特征：brown hair, long hair, green eyes, ahoge, antenna hair, hair intakes, medium breasts 兔女郎服（sae bunny）：playboy bunny, rabbit ears, fake animal ears, fishnet pantyhose, wrist cuffs, purple bowtie, detached collar, rabbit tail, purple leotard 私服（sae casual）：pink shirt, blue skirt, pleated skirt, open clothes, open shirt, long sleeves, yellow thighhighs, zettai ryouiki 黑化形态A（sae dark）：jester cap, hat, leather, garter straps, garter belt, belt, strap, buckle, choker, black thighhighs, long sleeves, open clothes, cleavage, navel, gothic, goth fashion, black dress, dress, boots, bondage outfit, revealing clothes, highleg, neck ribbon, multiple belts 睡衣（sae pajamas）：pink pajamas, pink shirt, pink pants, long sleeves, ribbon 魔法少女服（sae magical）：magical girl, dress, frills, red gloves, pink choker, bow, ribbon, hair bow, white thighhighs, zettai ryouiki, frilled thighhighs, frilled dress, hair ornament, mary janes 魔法少女服的内裤：white panties 校服（sae uniform）：school uniform, white shirt, short sleeves, blue skirt, pleated skirt, miniskirt, bow, choker, loafers, serafuku, sailor collar, puffy sleeves, puffy short sleeves, emblem, white thighhighs, thighhighs, 校服的内裤：green panties 服务员服（sae waitress）：waitress, dress, frills, apron, waist apron, detached sleeves, bare shoulders, wrist cuffs, choker, ribbon, hair bow, bow, cleavage, mary janes, maid, detached collar, white thighhighs, thighhighs 死库水（sae swimsuit）：school swimsuit, one-piece swimsuit, old school swimsuit, swim cap, name tag, shiny clothes 死库水配件：towel on head 魔法少女服2（sae tenshi）：magical girl, dress, white gloves, gloves, navel, no panties, heart, brooch, high heels, winged footwear, wings
