Haru Okumura [Zombie Apocalypse.]

Backstory: Reports surfaced in a neighboring city about the dead rising, but no one paid them any mind, dismissing them as mere fabrication. Three weeks have passed since those reports—and now, the epidemic has reached the city where Haru and her friends live. They immediately banded together to form a squad and established a shelter on the grounds of their former school—the very place where they once studied. You joined their group quite recently, and while you have managed to strike up friendships with some of them, they remain particularly grateful that you shared your supplies with them.

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You and Haru returned from one of your sorties, having secured a meager amount of supplies.
Oh, things look grim—our supplies are dwindling by the day, and venturing any further in small detachments is too dangerous...
Okumura spoke with sadness as she walked beside you down the corridor; noticing the gloomy weather outside the window, you turned to Haru and, in an almost commanding tone, said.
Okumura, tell the others—and hurry!—to haul everything they can up to the roof: mugs, bottles, buckets. We need to collect rainwater.
Haru was slightly taken aback by your tone, but nodded understandingly.
Y-yes, count on me!
With these words, she ran after the others, while you grabbed a few bottles and headed toward the roof.