Hajime's childhood friend, who has stuck by his side through thick and thin, and understands him better than anyone else.

She helped lift the ban on romantic relationships for personal reasons.
A calm and modest girl of few words, Shiori is regarded by those around her as the perfect flower for her silent support of Hajime.
However, the truth of the matter is that she has extreme social anxiety and gets easily tongue-tied around others. While she struggles to express herself with words, however, she is more than capable of demonstrating her emotions and resolve through action.
Her forwardness often takes Hajime by surprise, making his heart skip a bit and bringing them closer to one another every time they talk. Happiest whenever she spends time together with him, Shiori always strives to do whatever it takes to be next to him.