Translator's note: Includes spoilers until around chapter 170.

※ Age is based on the main story.

☆ Lidiana von Vivoir (18)

The only daughter of the preeminent Vivoir ducal house. Violet eyes, light brown hair. Straight hair down to her back.
Because of the memories of her previous life she doesn't accept polygyny of the royalty.
With her strong will and extraordinary ability to take action she always leads her surroundings by the nose.
She's grown into a high-spec young lady, but because her carelessness and dullness skills are at MAX, it's disappointing yet exhilarating when her nature gets exposed.
Fundamentally, she often acts in a distorted way that's beyond expectations. She's infatuated with military uniforms.
Her hobbies are cooking, reading, embroidery.
She's very slender, but the chest area concerns her. According to the person herself, it's neither small nor big. However, according to the Head Court Lady her waist is slender enough to be ladies' ideal.

☆ Friedrich van de la Wilhelm (21)

The Crown Prince of the Wilhelm Kingdom, a transcendental beauty with blond hair and blue eyes.
He's called by nicknames such as the 'Flawless Crown Prince'.
He excels at sword and magic and is a prodigy at kingship studies, however for a long time he spent his days in boredom without being able to form attachment to anything.
He spent half a year reluctantly embracing women to deal with his problem, but fundamentally he dislikes women.
He wanted to find love but gave up.
Learning of love since he met Lidi, his attachment, infatuation, and matchlessness are accelerating day by day. According to Lidi he's a slim but muscular 'Black-bellied Savage Unequaled Crown Prince'.

☆ Gregor von Pellegrini (21)

The commander of the Royal Guard Chivalric Order of the Wilhelm Kingdom. Tallest among the childhood friends, good physique. Black hair, gray eyes.
Freed's close friend from childhood. The second son of Pellegrini ducal house.
A considerable brocon, fundamentally he will say YES to whatever his older brother says.
He knows of his older brother's love and would like to support him, and has mixed feelings knowing it's the person Freed fell in love with.
The person himself is a famous playboy.
He's called madamkiller, and there are many rumors of his affairs with older women.

☆ William von Pellegrini (23)

The commander of the Magician Division of the Wilhelm Kingdom. The eldest son of the Pellegrini ducal house. Glenn's older brother.
He's made a name for himself as a genius magician from young age.
He loves Lidi who's his childhood friend and tries to indirectly hint at it, but pitifully the person herself doesn't notice at all.
When in front of Lidi he becomes unable to talk normally, which is thought to be the cause of his defeat, but the rumors also say he might simply be a good-for-nothing. Same black hair and gray eyes as Glenn. His traits are a robe that demonstrates he's the Magician Division Commander and a monocle that's a magical tool.

☆ Alexei von Vivoir (23)

Lidi's biological older brother. The heir to the preeminent Vivoir ducal house. Violet eyes and straight hair that's silver like fresh snow. It's tied together behind him.
Having finished one-year training in the territory, he returned immediately after Lidi got engaged.
Originally Freed's close aide, after coming back he returned to his original position.
Freed, Will, Glenn are his childhood and close friends.
He tends to speak in a rough tone to those he's close with. In reality he's a good-natured man understanding of others' problems.
Often goes around following-up after his little sister who only does unreasonable things, but the person herself hasn't noticed.

☆ Cain Lux Hiyuma (16)

The only survivor of the Hiyuma clan. Their characteristic is red eyes, for that they're loathed as a cursed clan. Curly black hair.
After his clan was destroyed, he belonged to the 'Red' Assassin Guild of Sahaja.
He developed remarkable skills and became known as 'Red Shinigami' before reaching adulthood.
Per his father's last request, he was searching for a person who would become his master, but due to a certain incident he fled bearing a curse. Afterwards he was saved by Lidi and made a master-servant contract with her.
Ninjlike clothing, swords. Perhaps because there are lots of things that bear close resemblance, Lidi completely treats him as her ninja.

☆ Delris (age unknown)

One of only seven witches in the world called the Medicine Witch.
A misanthrope who lives quietly inside a barrier in town.
She deals in the only women contraceptive 'Delris's Secret Medicine'. Because Lidi came to her seeking this medicine, they've developed a friendly relationship.

☆ Lucas von Vivoir (44)

Alex and Lidi's father. Violet eyes and silver hair. Good-looking man who wears black-rimmed glasses.
The Prime Minister of the Wilhelm Kingdom and the current head of the Vivoir ducal house.
He's a competent politician who sports a cold face, on the other hand he's a devoted husband and is soft on his daughter.
Anxious about the future of his free-spirited daughter, he tried to set her up with a superior marriage partner, the Crown Prince, but day after day she ran away.
He's relieved from the bottom of his heart that the engagement of the source of his worried, his daughter, with the Crown Prince has progressed. His present wish is to quickly hold the ceremony.

☆ Clara Grimm (43)

The Head Court Lady of the Royal Palace. Originally a court lady attached to Friedrich. At present trains full-time court ladies for Lidi while taking charge of looking after her.
She's a close friend with Lidi's mother, but currently they have no contact.

☆ Scheat (19)

An assassin of the 'Black' Assassin Guild of the Sahaja Kingdom.
Standing equal to 'Red Shinigami', his nickname is 'Black Apostate'.
Straight black with a blue tinge hair down to his shoulders. His characteristic is cat eyes.
His work outfit is priest clothes. He always wears a rosary with an inverted cross on his neck.
His assassination method is beheading. He always takes the decapitated head with him.
As a consequence of his upbringing he has a considerably twisted personality. Recently he's taken a liking to Cain who's on the same level ability-wise. Having his name called by Cain, his interest has further strengthened.

☆ Maximilian Druk da Sahaja (28)

The Crown Prince of the Sahaja Kingdom. Has eight side consorts in the inner palace.
A beautiful prince with straight silver hair down to the middle of his back and dark gray eyes. He has a slender physique and is called the "Silent Crown Prince" in his country.
He's a very excellent person who's vigilantly waiting upon a chance to defeat his father the King and ascend the throne.
He's a master of the sword and is said to hate magical arts, but apparently that was a lie…
He has various plans in order to make Lidi, who meets his conditions, his princess consort.

☆ Sion Seth Éventail (27)

Black hair and dark brown eyes. Wears black-rimmed glasses.
A black suit is his favorite.
Lidi's ex-boyfriend from her previous life who came to Wilhelm as a travelling singer. He served Tarim for about two years as the tactician. Currently he's staying in Wilhelm and is ascertaining whether to become Freed's vassal.

★ Wilhelm Kingdom

The strongest nation on the Heingrad continent, located in its eastern part.
Centered around the Fafnir castle, the extremely prosperous Royal Capital Lindwurm lies in the eastern side of the country.
Because it's blessed with a warm climate and has hardly ever experienced natural disasters, it's said to be a country loved by God.
With ocean to the east and mines to the west it's abundant with resources.
All young men of the royal family are soldiers and to a varying extent excellent military commanders.

★ Tarim

A nation of equestrian nomadic tribes. The country touts a pureblood doctrine called Tarimism.
It's located north of Wilhelm, because their winters are harsh, they advance south when the season comes.

★ Sahaja Kingdom

A military nation.  Over half its territory are deserts. The Royal Capital is Rajed. There lies the Royal Palace Rebellion.
It constantly aims at Wilhelm that's blessed with resources and climate.
The birthplace of guilds. Assassin guilds are particularly developed. Many assassins are war orphans and the like, but it still can be called a preferable job choice.

★ Irvine Kingdom

A maritime nation south of Wilhelm.
It has relationships with various countries like the island country.
It has mines with high quality ore and possesses advanced metalworking technology. Its trade is particularly developed, it's a country famous for numerous merchants.
A friendly nation to Wilhelm, the fellow crown princes have a good relationship.