Xeno

Xeno (ゼノ, Zeno) was the male deuteragonist in Jun Mochizuki's one-shot manga series, Crimson-Shell. While working under Red Rose's Crimson-Shell Division, Xeno happened across Claudia and managed to pull her out of her own self-isolation. While Xeno wasn't Claudia's Thorn, he still made a promise to defend her from those who attempt to deny her existence by his own means.