Yoshirou, is the owner of the restaurant Angel Mort. Kindly, he gives Shion a job as a waitress, under the guise of her being Mion, when she returns to Okinomiya and hides from her grandma Oryō. He informs her about the third year of the curse occurring awhile she was away at St. Lucia Academy.

Mion implies to Shion that he will be punished by the Sonozaki for helping her hide from Oryou, unless she "shows responsibility" by punishing herself.

Yoshirou wears a red bow tie, a black jacket and a white shirt. He has brown hair and eyes.

Note: Not to be mistaken with another uncle of Mion and Shion who is also called Yoshirou Sonozaki.