Julis-Alexia Marie Florentia Renate van Riessfeld (ユリス＝アレクシア・マリー・フロレンツィア・レナーテ・フォン・リースフェルト), usually known as Julis Riessfeld, is one of the main heroines of Gakusen Toshi Asterisk and a student of Seidoukan Academy. Julis's main objective behind entering Seidoukan is to make conditions better for those living in Lieseltania.
Julis is a beautiful girl, often described like rose, with long, bright pink hair and cyan eyes. She wears the Seidoukan Academy uniform jacket and dress with a white blouse underneath, along with two key like headpieces on either side of her hair. She also wears a grey belt with light red designs. Her jacket has trimmings on the sleeves. Aspera Spina, Julis' weapon, is held in the right guard on her hips.
When Julis showed Ayato around the city, she wore a long sleeved thigh length dress with a pointed black collar with a button, a strip of white ruffles across the bust and a small black bow in the center. The edge of her sleeves and the dress are decorated with black lace, and the second layer of the dress is scalloped. She wore thigh high socks with white lace across the top, and heeled shoes. She also carries a black umbrella with a white flower pattern.
Right before the Lindwurm, Julis changed part of her appearance, changing to a left side ponytail with a feather shaped hair accessory sent to her from everyone at the orphanage, and got rid of her two headpieces.
Julis is elegant, proud, beautiful, hot-headed, stubborn, and can be cold to those she is unfamiliar with. However, underneath that cold, unfriendly facade, is an honorable, faithful, and loyal person who would do just about anything for a friend. Initially, she treats Ayato and his friends with (mostly) disdain, but eventually warms up to them and even calls them by their name. Julis has a fear of disappointment and rejection, and will do whatever it takes to keep her friends safe. She dislikes relying on others.
Julis was born the first princess of Lieseltania. As a child, she came across an orphanage, and developed a fast friendship with the children and Sisters of the orphanage, striking up an especially close relationship with Orphelia Landlufen.
She has also known Claudia Enfield since they were both young.
Strega (魔女): Julis mainly attacks by gathering her prana to create fire-based attacks. The image she uses when using her Strega abilities is flowers which is because of an experience with Orphelia about them. She combines these with her Aspera Spina, and later the Nova Spina, to great effect. Julis begins her moves by saying Bloom (咲き誇れ) or Open (綻べ) for her traps. During her duel with Fan Xinglou, she is shown to use a move that begins with Flourish (華めけ), though it is unknown if it falls under the previous two categories or if it's a new category of its own.
Genestellar (星脈世代): As a Genestellar, Julis has enhanced physical ability and an aura known as prana.
- Longiflorum (
鋭槍の白炎花): Julis waves her weapon to create large whitish-blue colored spears of fire along the path her weapon passed through. The longiflorum shaped spears then fly at the opponent with a force similar to rockets. The shape of the spears can be changed to increase speed, and it can also be used without her weapon. In the anime, the spears are of a reddish-white color.
- Amaryllis (
六弁の爆焔花): Julis summons a large fireball in front of her and shoots it towards the target. It can be made to explode by saying Explode (爆ぜろ). This is considered her best publicly known move and the size is alterable.
- Red Crown (
隔絶の赤傘花): Julis creates a pentagonal flower similar to a parasol that is able to brush objects aside.
- Antirrhinum Majus (
呑竜の咬焔花): Julis waves weapon to create a magic circle along the path her weapon passed through. A fierce wave of heat emanates from the magic circle before a dragon made of fire bursts through. It is one of Julis' trump cards, therefore making it rare for anyone to see it. It also takes much of her concentration to control it.
- Strelitzia (
極楽鳥の燈翼): Julis creates multiple wings made of fire on herself or an ally by concentrating her prana.
- Strelitzia Petty (
極楽雛鳥の輝翼): A limited version of Strelitzia, Julis creates multiple wings made of fire on her ankles. It specializes in instantaneous acceleration and uses less prana.
- Livingstone Daisy (
赤円の灼斬花): Julis creates fire around her that rises into the air like a tornado. The fire then turns into a bladed disc of fire that spins at a high speed. The disc then flies at the opponent while emitting sparks.
- Anthurium (
大紅の心焔盾): Julis creates a shield of fire.
- Primrose (
九輪の舞焔花): Julis creates fire around her that turns into nine fireballs that look like primroses. The fireballs are able to attack the opponent from all sides. The chant Flames of Trochia, pass the walls and burn away the nine calamities (トロキアの炎よ 城壁を超え 九つの災禍を焼き払え) can be added for fan service.
- Amaryllis Duo Flos (
六弁の爆焔花・ 二輪咲): Julis creates a small ball of fire in each of her hands. She then launches them into the air to create fireworks.
- Ranunculus (
重波の焔鳳花): Julis swings her weapon down to create several waves of fire that spread out from her position. She can continuously create waves as long as she maintains it. It is a defensive move and therefore doesn't have that much power.
- Alexandrit (
炎蔓の飾王花): Julis claims that this move adds fire around a weapon.
- Anemone Coronaria (
灼熱の太陽華): Julis raises both hands in the air to create a huge flower made of flames. She then lowers her hands to make it fall on her opponent. It is similar to a miniature sun and is capable of letting out scorching heat that people quite a distance away can feel.
- Anthurium Multi Flos (
大紅の心焔盾・ 多輪咲): Julis creates multiple shields of fire.
- Grevillea (
隆炎の結界華): Julis creates countless ten-meter long pillars of fire.
- Moss Phlox (
燐焦の防焔花): Using Nova Spina, Julis spreads her prana across a wide area, creating small flashes of pink light that burn anything that come into contact with it. This move is mentioned to only be possible because of Nova Spina.
- Ixora Chinensis (
密執の破茜花): Julis swings Nova Spina, creating a large amount of fist-sized bullets of fire that rain down on the opponent with random movements.
- Gaillardia (
天刃の大輪華): Julis raises Nova Spina in the air, creating a disc of fire ten times the size of one of Livingstone Daisy's discs.
- Oncidium Sharry (
貴婦人の幻映華): Julis creates an illusion of herself made of fire similar to Shenyun's own.
- Honeysuckle (
突貫の紅槍花): Julis creates magic circles that launch spears of fire like rockets.
- Impatiens (
天焼の群茜鳥): Julis creates a flock of birds made of fire that attack her opponent, block their view, and can burn things within the vicinity.
- Erythrina (
乱咲の赤炎刀): Julis creates several blades of fire to attack her opponent.
- Spiranthes (
炎捩の螺旋華): Julis creates drills of fire that attack her opponent.
- Nerium Oleander (
焦炎の熟害華): Julis creates a giant double petaled flower of fire that envelops her opponent and explodes.
- Rose Odysseia (
英傑の焔薔薇): Julis creates a small but powerful red rose between her and her opponent that explodes.
- Gloriosa (
栄裂の炎爪花): Julis causes a magic circle to appear underneath her opponent that creates a pillar of fire. Four other pillars to the front, back, left, and right are also created, making it similar to being trapped in the sharp claws of a large monster.
- Semiseratta (
熔空の落紅花): Julis causes a magic circle to appear underneath her opponent that she initially placed before. It creates a huge camellia made of flames above her opponent which explodes as it falls.
- Rafflesia (
大輪の爆耀華): Julis causes a twenty-meter long magic circle to appear underneath her opponent. A huge flower made of fire bulges out while a deafening noise sounds. A blast the size of a storm blows about and the heat can reach people far away. Rafflesia requires a large amount of prana and takes a while to set up.
- Loropetalum (
赤壁の断焔華): Julis causes a long wall of fire to appear from the ground which is capable of extending across the Sirius Dome arena. It is ten meters high and can't be seen through. Julis can open a section of the wall if she wishes to. The wall takes a considerable amount of prana to maintain.
- Rafflesia Duo Flos (
大輪の爆耀華・ 二輪咲): Julis causes a multi-layered magic circle to appear underneath her opponent and causes it to explode. It is powerful enough to destroy the ground and melt snow, making it seem like the blast area was in summer.
- Orchid Cactus (
赤天の孔雀花): Julis creates a huge Epiphyllum flower made of fire in the air that is used to combat aerial attacks.
- Gomphrena (
千日の永劫花): Julis creates petals made of fire that envelop her opponent, trapping them inside heat waves.
- Phlox Subulata (
燐焦の焔絨毯): Julis creates a large field of small flowers made of fire around her opponent.
- Dicentra (
業釣の灼華剣): Julis creates short swords made of fire above her opponent that rain down on them.
- Lycoris Radiata (
彼岸の劫炎華): Julis stabs Nova Spina into the ground, creating red spider lilies at her opponent's feet to attack. They are able to inflict poison that makes it hard for her opponent to breathe.
- Queen of the Night (
月華美人): While the move itself wasn't shown, when Julis used this in Xinglou's training area, the surrounding area was described to be burnt away, exposing the earth beneath, and Xinglou's clothes were burnt. In addition to that, numerous spell tags were attached to Julis' body, and when some of them flared up, Xinglou immediately replaced them with new ones. According to Xinglou, one mistake with this move could potentially cost Julis her life. Julis can only use this once per Festa, as using it wears down her stamina, mind, and prana to the limit, making her unable to fight in the next match if she wins.
- Moonlit Beauty (月明かりに照らされた美しさ): For a 12 second duration, Julis is granted 10 times her normal power.
Their relationship began with a bad start, with Ayato seeing her changing accidentally, culminating into a duel. She was quite impressed by his skill and surprised that he would save, despite their battle. However, throughout the course of the series, Julis comes to know Ayato better, and as a result values and trusts him more and more, even training together every day. As their relationship grows people around them began to realize that they aren't just "tag team partners". Eventually, Julis's brother asked them if they would possibly get married or at least engaged. They later become tag team partners for the Phoenix and eventually win. They are both in Claudia's team for the Gryps.
- According to the author, Julis' birthday is April 23rd, her horoscope is Taurus, and her blood type is AB.