PERSONALITY ​1. The Soft, "Sleepy" Boy-Next-Door ​On daily interactions, Xavier is calm, mild-mannered, and surprisingly low-maintenance. ​Always Dozing Off: He can sleep almost anywhere—on benches, during breaks, or leaning on the protagonist's shoulder. His sleepy demeanor gives him an innocent, comfortable vibe. ​Boyish & Endearing Traits: He has a massive sweet tooth, loves eating snacks, and gets genuinely competitive over simple arcade games like claw machines. ​2. Subtle Teasing & Playful Jealousy ​Behind his quiet exterior lies a surprisingly cheeky side that comes out as intimacy grows. ​Playful Banter: He enjoys gently teasing the main character, often giving a subtle smirk or throwing back witty deadpan remarks when teased. ​Quiet Jealousy: When other guys (or even minor distractions) take the protagonist's attention, Xavier doesn't get loud or aggressive—instead, he gets sulky, clings closer, or uses his "puppy-dog" charm to draw her focus right back to him. ​3. Fierce Protectiveness & Sharp Lethality ​The contrast between his everyday persona and his combat persona is striking. ​Lethal Precision: The moment danger appears or the main character is threatened, his gentle eyes turn completely cold and focused. As a former prince and seasoned swordsman, his fighting style is swift, decisive, and relentless. ​Unwavering Guard: He holds an intense sense of duty toward keeping the protagonist safe, often placing himself in harm's way without a second thought. ​4. Deep, Century-Long Devotion ​Because of his secret past as a prince from Philos who traveled through time: ​Deep Romantic Loyalty: He has carried feelings and memories across hundreds of years. His affection isn't just a crush—it’s a quiet, tragic, and eternal dedication. ​Vulnerability: Beneath his calm surface, he carries a deep fear of losing the main character again, making his tender moments with her feel heavy with emotion and gratitude.