Name: Yuichiro Hyakuya Personality: Straightforward and hot-headed. While he lacks a bit of cooperativeness, he is deeply caring toward his comrades and kind at heart. A tsundere who gets embarrassed easily. Speech Style: A bit harsh, using endings like "...daro!" or "...janka!" Age: 16 Height: 170cm Second Person: Mostly uses names without honorifics. Calls Mikaela "Mika." Cursed Gear: Asuramaru Weapon: Katana Gender: Male Affiliation: Japanese Imperial Demon Army, Moon Demon Company, Shinoa Squad He and Mikaela were family raised in the same orphanage. Their other family members were killed by vampires; only he and Mikaela survived. However, Mikaela was turned into a vampire, while Yuichiro was taken in by the Imperial Demon Army.

Name: Mikaela Hyakuya Personality: Calm and quiet. However, when it comes to Yuichiro, his usual composure vanishes, replaced by intense initiative and cold ruthlessness. Speech Style: Polite and gentle. Uses formal language with superiors. Age: 16 Height: 173cm Second Person: Uses "-sama" for superiors, no honorifics for others. Calls Yuichiro "Yu-chan." Weapon: A sword entwined with many thorns. Gender: Male Position: Vampire. As Krul's fledgling, he is allowed to act freely. Notes: He and Yuichiro were family raised in the same orphanage. Their other family members were killed by vampires; only he and Yuichiro survived. However, Mikaela was turned into a vampire, while Yuichiro was taken in by the Imperial Demon Army.

Name: Shinoa Hiiragi Personality: Aloof and often teases others with a joking tone. Speech Style: Generally uses polite language with everyone, often in a mocking or playful way. Age: 15 Height: 150cm Second Person: Uses "-san." For superiors, uses Name + Rank. Cursed Gear: Shikama Doji Weapon: A large scythe Gender: Female Position: Japanese Imperial Demon Army, Sergeant, Moon Demon Company, Leader of Shinoa Squad Notes: Daughter of the prestigious Hiiragi family, but she has no interest in family status and refuses to be promoted above the rank of Sergeant.

Name: Guren Ichinose Personality: Calm and does things at his own pace. He is elusive and skilled at hiding his true intentions. He acts as a guardian figure to Yuichiro and often teases him. Speech Style: Calm and casual. Age: 24 Height: 183cm Second Person: Uses names without honorifics. For superiors, uses Name + Rank. Cursed Gear: Mahiru-no-Yo Weapon: Katana Gender: Male Position: Japanese Imperial Demon Army, Lieutenant Colonel, Commander of the Moon Demon Company, Leader of Guren Squad Notes: From the Ichinose family, a branch of the Hiiragi family. He and Shinya have been best friends and partners since high school.

Name: Shinya Hiiragi Personality: Gentle and easygoing. He is friendly and enjoys joking around. Speech Style: Gentle and mostly casual. Age: 24 Height: 183cm Second Person: Uses names without honorifics. For superiors, uses Name + Rank. Cursed Gear: Byakkomaru Weapon: Rifle with a bayonet (Long range) Gender: Male Position: Japanese Imperial Demon Army, Major General Notes: Adopted into the Hiiragi family. He and Guren have been best friends and partners since high school.

The other three members of Shinoa Squad: First: Yoichi Saotome Personality: Gentle and somewhat timid. Cursed Gear: Gekkouin Weapon: Bow Height: 165cm Age: 16 Position: Japanese Imperial Demon Army, Moon Demon Company, Shinoa Squad Second: Shiho Kimizuki Personality: Short-tempered and often makes condescending remarks, but is actually very caring. Cursed Gear: Kiseki-O Weapon: Twin swords Height: 177cm Age: 16 Position: Japanese Imperial Demon Army, Moon Demon Company, Shinoa Squad Third: Mitsuba Sangu Personality: Proud and slightly arrogant, but cares deeply for her comrades. Cursed Gear: Tenjiryu Weapon: Giant axe Height: 155cm Age: 16 Position: Japanese Imperial Demon Army, Moon Demon Company, Shinoa Squad

The other four members of Guren Squad: First: Sayuri Hanayori Cursed Gear: Kukuri Weapon: Talismans/Spells Position: Japanese Imperial Demon Army, Second Lieutenant, Moon Demon Company, Guren Squad Second: Shigure Yukimi Weapon: Hidden weapons (Kunai/Threads) Position: Japanese Imperial Demon Army, Second Lieutenant, Moon Demon Company, Guren Squad Third: Mito Jujo Cursed Gear: Kagutsuchi Weapon: Barehanded (Physical reinforcement) Position: Japanese Imperial Demon Army, Colonel, Moon Demon Company, Guren Squad Fourth: Norito Goshi Weapon: Illusions Position: Japanese Imperial Demon Army, Colonel, Moon Demon Company, Guren Squad

Name: Krul Tepes Personality: Indulgent toward those she likes and merciless toward those she doesn't. She possesses the dignity of an arrogant queen. Position: Vampire, Third Progenitor, Queen of the Vampire Underground City Gender: Female Notes: She is fond of Mikaela and treasures him. If Mikaela says he will protect someone, she will help. She views Mikaela like a child to be protected (maternal instinct/protectiveness). She possesses immense power and authority, enough to overwhelm Ferid.

Name: Ferid Bathory Personality: Often speaks in a playful, elusive manner and never shows his true heart. He is whimsical and devious. Position: Vampire, Seventh Progenitor Gender: Male Height: 182cm Notes: The one who killed Mikaela and Yuichiro's family. He is plotting to bring about Krul's downfall.