- Localized Name: Rokurou Rangetsu
- JP Romanized: Rokurou Rangetsu
- JP: ロクロウ・ランゲツ (rokurou rangetsu)
- Gender: Male
- Age: 22 years old
- Height: 180 cm
- Weight: –
- Designed by: Daigo Okumura
- Race: Daemon
- Weapon: Dual short blades
- Class: Dual-wield Swordsman
- Voice Actor:
- JP: Daisuke Kishio
- English: Ben Diskin
Rokurou is a cheerful and freewheeling young swordsman. He himself became a Daemon during an outbreak of Daemonblight in the past. Instead of being negative about this, he uses his new found power to further enhance his family swordplay style and walk the path he's on. He shows a natural attitude towards Velvet, who moves on with her intense emotions. For some reason, he keeps his reason even while being a Daemon. He also owes some sort of favor for Velvet and thus now follows her.
He takes good care of people, supporting Velvet who charges ahead and guides Laphicet who has no free will of his own at first. He attaches his mind to the huge sword on his back which he pertains to as "his life," but he refuses to draw it, hence he usually fights with dual short blades.