Cross x Regalia

In a quiet corner of Chinatown, a high school student named Inumi Haserou, who works as a part-time bodyguard for 1000 yen per job, encounters a girl named Nata. She calls herself a Sage and collapses in an alley. Haserou decides to protect her, disrupting his otherwise calm routine. Soon after, they are targeted by vampiric creatures known as Demonic Sages, who feed on human energy and seek to eliminate Nata. These beings are after her because she possesses a power that can render them ineffective. Haserou must now defend her while dealing with the growing threat of the attackers.