Rossweisse

ロスヴァイセ

Affiliations:

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Originally serving as Odin's bodyguard, she was left in Issei's town by Odin following the battle with Loki and Fenrir. Rias then persuaded her to become her servant, and she remained at Kuoh Academy as a teacher.
Rossweisse is known as a very serious individual who, since her youth, has acted professionally by prioritizing work and study above all else. This dedication, however, caused her to miss out on romance, leaving her extremely bitter and sensitive about not having a boyfriend; she is quick to anger or sadness when made fun of. She has taken a liking to her role as an educator, ensuring her students understand her lessons and helping them whenever they are in a bind, for which she is appreciated. Rossweisse has little tolerance for those who behave unprofessionally, particularly regarding lewd acts at inappropriate times. When she lectures them on standards, they usually retort that she is simply jealous. This may hold some truth, as she has expressed interest in doing perverted things with her future boyfriend on numerous occasions, and she also desires a lover who is financially stable with a bright future.
Despite her seriousness, she is described as clumsy and tends to make rash decisions without informing anyone. She is highly susceptible to alcohol, as a single drink can leave her drunk and vomiting for extended periods. Rossweisse carries a lot of repressed baggage from upholding her uptight and modest demeanor, which disappears when she is drunk, causing her to open up about her true thoughts and frustrations. She also has a compulsion to buy items on sale when they are cheap, showing enthusiastic excitement whenever she visits 100-Yen shops, which led Issei to dub her "The 100-Yen Shop Valkyrie". Additionally, Rossweisse tends to speak with her country's accent when she is flustered.
Like the other girls, Rossweisse acts like someone her age when on a date with Issei, ending up acting shy when he called her cute. She soon develops romantic feelings for Issei in Volume 17, after he proclaimed that he would protect her from Euclid, which he did.
After falling in love with Issei and becoming engaged to him, Rossweisse has started to partake in perverted activities she normally frowns upon, such as wanting him to apply suntan oil on her, sleeping with him while wearing revealing lingerie, and fighting with the other girls over him.
Powers & Abilities

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Rossweisse is a genius in Norse Magic, despite lacking talent in her house's Seiz-Style Spirit Magic, she realized she was talented in others, such as Rune-style, Gondol-style, offensive magic, and those not used in their house, exceeding Rias and Akeno. She could teach others as she taught Asia about basic summoning magic, and other kinds. Rossweisse uses a high-level, intricate and self-invented magic circle, strengthening her spell's offense and defense, while restraining magic power to the bare minimum. Le Fay and Euclid complimented her talent, letting her theorize a spell that could seal Trihexa, the latter stating it wasn't inferior to her grandmother, a famous Norse magician. She can strengthen her further magic using Mistilteinn, which allowed her to overpower Brynhildr and Akeno.
- Elemental Magic: She notably excels in the use of ice, fire, water, lightning, wind, thunder, light, and explosive-based magic. It is noted that she has inherent talent at studying and learning offensive magic. Rossweisse has demonstrated great offensive power with this magic, as she was able to finish off several Midgardsormr clones after they were weakened and knock down Sairaorg Bael after he let his guard down, despite him being enveloped in Touki.
- Defensive Magic: Upon returning from her training in Valhalla in Vol 12, Rossweisse starts to use defensive spells (using the trait of Rook), which are strong enough to easily shield against Balance Breakers that specialize in destructive power. She also learned defense magic to negate the adverse effect of touching holy objects such as Holy Swords and the Holy Bible for a short period of time. As seen when she used two of Xenovia's Excalibur fragments (Transparency and Mimic) by putting multiple layers of defense magic on her hand during the Rias-Sairaorg Rating Game match and reading a Bible without suffering a severe headache.
- Sealing Magic: Rossweisse can also use sealing magic, which she learned by researching the information about Trihexa. Used in conjecture with barrier magic, she can seal the movements of mass-produced Evil Dragons in Vol 19 by studying Asia's Evil Dragons. After modifying her technique, her sealing barrier technique was used by Three Factions to seal the Emperor Beast of Apocalypse. She could also use it in combat to seal her foes. Her barrier was even effective against Armaros, the Grigori anti-magic specialist although she needed time to prepare a stronger barrier as his anti-magic abilities could destroy a half-baked barrier. In Vol 25, Rossweisse, by enhancing her power with Mistilteinn, could use her Barrier magic to seal off entire areas to prevent her foes from escaping.
- Teleportation Magic: Rossweisse is proficient in teleportation magic.
- Summoning Magic: While she does not excel at it, Rossweisse possesses knowledge in summoning magic as she was capable of teaching Asia the basics of summoning magic.
- Enhancement Magic: In Vol 22, Rossweisse can use this magic to enhanced her own physical abilities, such as increasing her speed. In Vol 23, she could enhance the physical abilities of the entire Team Red Dragon Emperor of the Blazing Truth team.
- Hypnosis Magic: In True Vol 1, Rossweisse can use hypnotism magic on Ingvild Leviathan to lose consciousness.
- Security System Magic: Rossweisse has some level of skill with Security System magic, as she tried to use it to undo the technique placed on Issei.
- Black Magic
- White Magic
-Clothing Manipulation: Rossweisse is capable of using magic to altering her attire, changing from her formal suit into her Valkyrie armor.

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Equipment

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Details:

First name:: Rossweisse
Other names:: Rose
100 Yen Shop Valkyrie
Valkyrie who never had a boyfriend
Drunken Valkyrie
Birthday:: August 8th
Height:: 173 cm (5' 8")
Weight:: 59 kg (130 lbs)
Species:: Reincarnated Devil (Former Valkyrie)
Eye colour:: Aqua