Sitri Clan

"Unbowed. Unbent. Unbroken."

- Sitri Clan's house words

The Sitri Clan is one of the remaining 32 pureblood houses of the 72 Pillars. They are among the highest-ranking houses, ranked the twelfth of the hexagram, and hold the title of [Prince].

Summary
As the house that produced the Super Devil and current "Leviathan", the Sitri Clan is known as one of the most powerful and influential houses of the Netherworld. Despite this, they are considered the youngest house within the 72 Pillars, though some might argue that their short lineage is what makes them so powerful.

The house was founded by the original Sitri, who was one of the demons who fought alongside the original Lucifer during the Heavenly War. He is also one of the few who escaped imprisonment within the Underworld because of the Ouroboros Barrier and had passed down his title of [Prince] to the cardinal devil he created, Corlys Sitri, to enter "retirement" and the noble house of Sitri started from then.

Corlys Sitri then proceeded to have his son Jordayne with an unnamed pureblood devil who later became his heir and subsequently, the second head of the family. He is known across the Netherworld as a war hero, having personally vanquish the numerous wars and uprising caused by rebellious devils had ended and had led multiple conquests within the Realm of the Dead to gain more territory from the pagan gods, greatly expanding the territory of the Netherworld while under the banner of the Leviathan Clan.

As a reward for his bravery and dedication, the original Leviathan wedded him to the cardinal devil she created and the second princess of the Leviathan Clan, Valaena Nymeria Leviathan. From then on, the Sitri Clan would also be known as the Prince-Consort Clan, or more specifically, the Prince-Consort Leviathan Clan.

According to Valaena, the marriage between her and Jordayne was originally a loveless one, built solely based on honor and familial duty, but they eventually came to love each other as husband and wife. Eventually, after several centuries, they had their first daughter together, Serafall Lyssanei Sitri.

During the Devil Civil War, the house was one of the main supporters of the Anti-Satan Faction, whose plan was to overthrow Valaena's older sister, Tsufaame Tereaku Leviathan, and placed Serafall as the new Satan Leviathan, who was the second-in-line for the position by birthright. They later allied with the Gremory Clan, whose heir was the great-grandson of the previous Satan Lucifer and the current matriarch was the former apprentice of Lord Sitri.

Later on, with the war ended in the rebellion's favor, the four leaders of the Anti-Satan Faction were chosen to be the new Four Great Satans. Serafall herself was crowned the new head of the Leviathan Clan, abdicating her title as heiress to the Sitri Clan, passing down the position to her younger siblings.

Traits
Being the direct descendants of a cardinal devil, or children of one in Serafall and Sona's cases, members of the Sitri Clan possess the typical trait of the royal Satanic houses of having multiple pairs of bat-like wings as indications of their power.

Hereditary Ability
Like other pureblood devil houses, members of the Sitri Clan possess a unique hereditary power called the Veil's Piercer. This hereditary ability grants its user the ability to penetrate through any and all forms of defense, no matter if it is physical, magical, and even mental, as well as allowing them to see through and break all illusions before them. It also acts as a form of natural lie detector.

Due to Valaena Leviathan's marriage to Jordayne Sitri, her children, Serafall and Sona, all shown to possess the Leviathan Clan's signature ability known as the Sea Serpent of the End, as well as a natural affinity to water magic and water manipulation.

Emblem
The Sitri Clan's emblem is the stylized version of the Necklace of Blue Sorrows, a wedding gift that Jordayne gave to Valaena on their wedding night. This emblem, however, isn't typically used on their banners, but instead a gold sigil of a crowned leopard with two griffins by its side is used. Lady Valaena's personal guards wear a variation of the sigil, replacing the griffins by an ouroboros.

Residence
The Sitri Manor ( シトリー庄園, Shitorī-shōen ) is the seat of the Sitri Clan, located on a beach next to the Leviant Sea, three leagues to the west of the Sitri territory's capital city of Mors on a coastal road. Pale pink marble paves the manor and its courtyard. Terraces overlooking the numerous pools and fountains of the manor, shaded by blood orange trees, can be reached via a fluted pillar gallery leading to a triple archway. Because of the Sitri territory's naturally hot climate, the weather within the manor is most pleasant in fall, with warm days, cool nights, the salt breeze blowing in from the sea, and fountains and pools to admire and play in.

Valaena Bay
The Valaena Bay ( ヴァラエナ湾, Vu~araena-wan ) is an inlet of the Leviant Sea, separated from it by the stretch of water called the Necklace, held between the arms of Crocell's Tears to the north and Vespar's Reefs to the south, with the island of Bytru guarding the entrance to the bay. Vespar's Reefs shields against the rougher Leviant Sea, so Velaena Bay has calmer water, in addition to the Sitri Clan's royal fleet patrolling the bay and ensuring it is kept free from piracy. Located in the bay is Nagga, the largest port in the Netherworld, which also serves as a secondary port for Lilith when the main port is overwhelmed with traffic.

Bytru
Bytru ( ビトルー, Bitorū ) is the original seat of the Sitri Clan before Jordayne built the Sitri Manor and is located on the island of the same name. It is described as a grim place, built with arcane arts and sorcery, and resembles a giant tomb made out of oily black stone. The place is located on a giant mine of dragonglass, a type of special obsidian-like material only found within the Netherworld and used for witchcraft and dark arts of the worst kind. The island of Bytru is also where the Sitri Clan's private navy force is placed.

Serafall Memorial Hospital
The Serafall Memorial Hospital ( セラフォルー記念病院, Seraforū Kinen Byōin ) is a hospital created by the former heiress Serafall Leviathan, known for possessing the most advanced medical facilities in the Netherworld. It specialized in treating special diseases of demonic origins, such as the Elfegort Sleeping Disease or the Belzenia Devourer Syndrome. Located beneath the hospital and guarded beneath layers and layers of wards is a crypt where all nine of Serafall's children were buried.

Trivia

 * In demonology, Sitri is a prince of Hell who commands over 60 legions of infernal spirits, and causes men to love women and vice versa, and can make people bare themselves naked if desire. He is often depicted with a leopard's face and the wings of a griffin.
 * Members of the house are said to possess terrible taste buds, if none at all.
 * Dried sea serpent is considered a delicacy of the Sitri territory.
 * One of the Sitri territory's main exports is an aphrodisiac called "Tears of Corlys".
 * The Sitri territory is heavily modelled after a combination of Tunisia, Libya, and Egypt, both geographically and culturally.
 * Children of nearby nobles are often sent to live as wards of the Sitri Clan.
 * Because of Valaena Sitri, the house is considered to be a vassal clan of the Leviathan Clan.