Dark Zone: Reno, Battlefield Instructor in Blue Archive

【Blue Archive fanfic + dual protagonists + Escape from Tarkov: Arena Breakout + humor + lighthearted + plot-focused】 When Rin Chen, the most experienced “Operator” in the Dark Zone, arrives in Kivotos covered in bullet holes, a host of old friends from the frontline fortress come along with him. He discovers that what he has to teach isn't math or science, but military training for beautiful schoolgirls. The Federal Student Council president is missing, and smuggling is rampant on the black market. Students often carry guns, and conflicts between classmates are commonplace. But their teacher is a sigma male who's fought his way out of the Dark Zone. A huge number of wildly unpredictable variables keep appearing... and he's not the only one. There's an entire regiment: Renault... He will rewrite this chaotic ending. “Huh? I can pull equipment from my own stash? That's awesome!”