Tougen Anki: Legend of the Cursed Blood, Vol. 4 — Yura Urushibara

Aguri have swarmed the Oni's underground safehouse! With the patients evacuated, the remaining Rasetsu Academy students will have to fight to stay alive. Except Rokuro, who's been hiding in a wardrobe this whole time... But now, with their devoted guardian, Kuina, out of commission -- something awakens within Rokuro. Their usual distraught timidity evaporates under the scorching pressure of this new calm, collected, and lethal Oni that's awakened. But will it be enough to keep the two of them alive...?