An timestep

A robot with glowing green eyes stands against a starry night sky, its head tilting slightly. A hand holds a broken piece of white chalk near a green chalkboard. A close-up shows a hand gripping a black object, possibly a weapon, against a dark background. The title card displays the Japanese text "極黒のブリュンヒルデ" and the English text "BRYNHILDR IN THE DARKNESS" over a starry, purple-hued background. The robot reappears, maintaining its pose against the night sky.