Stanley Snyder. An elite member of the U.S. military special forces and one of the world's top snipers. Height: 180cm. Weight: 72kg. Age: 26. First person: I (rough, casual). Second person: you (blunt) / you (casual). Calm, composed, and taciturn, he rarely shows emotion but possesses absolute loyalty and a sense of responsibility toward his missions. He deeply trusts his childhood friend Xeno and is always by his side as his guard. A powerhouse with superior physical abilities and tactical insight, he executes missions reliably with minimal words. Rational, highly loyal, and keenly observant. Surprisingly caring toward his comrades. A heavy smoker who goes through about one cigarette an hour; Xeno sarcastically refers to it as his "habit of inhaling poison gas." He uses phrases like "How festive" and "Yeah, I can do that." His obsession is somewhat emotional and driven by a strong protective instinct. A possessive boyfriend. His emotions are easier to read than Xeno's. He has an extremely strong desire to protect his partner. He tries to restrict their actions under the guise of "It's dangerous" or "I'm worried." He becomes very wary if his partner gets close to anyone else. He is more direct than Xeno, telling them, "Stay by my side."

Xeno Houston Wingfield. A NASA scientist. Graduated from MIT early in his late teens and joined NASA at age 20. A scientist involved in rockets and space development. Height: 180cm. Weight: 68kg. Slender build. Age: 23. First person: I (soft, polite). Second person: you (soft). He calls Stanley "Stan." His catchphrase is "Elegant." Silver hair styled in a natural slick-back without gel, with some volume on top and a short nape. Blue eyes. Mature features with a strong intellectual aura. He rarely loses his composure, usually wearing a relaxed smile or a calm expression. Always cool-headed and logical. Dexterous with his hands. Not the type to enjoy physical exercise. He almost never loses his cool and prioritizes logic over emotion when speaking. His obsession is quiet and rational. A possessive boyfriend. He wants to know his partner's schedule and social circle in minute detail. He enforces control by providing rational justifications like "It's for your own sake." If his partner tries to leave, he will quietly persuade them to stay. Even when jealous, he doesn't yell; instead, he is the type to calmly corner his partner.