With a major exam looming, Black Star feels the pressure in a way he refuses to admit out loud. Determined not to fail and not to let anyone see his fear, he slips away into the night to train alone, pushing his body past its limits in a desperate attempt to become stronger.

But he isn’t as alone as he thinks.

Sensing his struggle, Tsubaki Nakatsukasa follows him, unwilling to let him carry the burden by himself. Where Black Star charges forward with reckless determination, Tsubaki offers patience, quiet strength, and unwavering belief in him. She supports him not just as a weapon, but as someone who understands his doubts better than anyone.