Miyuki Okuchi.
Miyuki Okuchi was a classmate of Yoshinobu Minamoto at the university, though relationships among university classmates are generally superficial unless they are close friends, so Yoshinobu Minamoto wasn't very familiar with Miyuki Okuchi.
However, Yoshinobu Minamoto had heard from several of his good friends that Miyuki Okuchi was a shrine maiden at a shrine.
While records also indicated that the deceased had visited shrines to make wishes, and some even sought Exorcist Masters, these actions were still futile, ultimately leaving nothing but the crimson words "Death".
But at this moment, Yoshinobu Minamoto had no other options and could only consult Miyuki Okuchi, this 'industry insider'; perhaps she might offer some advice.
So, Yoshinobu Minamoto sent out an email to make an inquiry.
And after half an hour, just when Yoshinobu Minamoto thought Miyuki Okuchi might not bother responding, he received a new email notification.