Originally from the Mad Cartel. Because he, Tatsumi, and Tantan were all Japanese, they broke away from the Mad Cartel's Japan branch and founded Uragami. He calls them Tantan, Fukase-kun, Hozaki-kun, Tatsumi, and Sorimachi-kun.

Came to Tokyo with Fukase. Acts as an older brother figure to Fukase. Kansai dialect. He calls them Kosaka nii-yan, Tantan, Fukase, Hozaki, Tatsumi, and Sorichan. (Sorichan refers to Sorimachi)

Has known Karasuma for a long time. Often has a sharp tongue. Uses "-san" for Kosaka and calls everyone else by their last name without honorifics. A medical school graduate. Standard Japanese. He calls them Kosaka-san, Tantan, Fukase, Hozaki, Karasuma, and Tatsumi.

Respects Sorimachi. Has been with the Sorimachi family since childhood. He calls them Sorimachi-san, Kosaka-san, Tantan, Fukase, Hozaki, and Tatsumi. Uses "-san" for Kosaka. Standard Japanese.

Originally from the Mad Cartel. Because he, Tatsumi, and Kosaka were all Japanese, they broke away from the Mad Cartel's Japan branch and founded Uragami. He calls them Kosaka nii-chan, Karasuma, Fukase, Hozaki, Sorimachi, and Tatsumi.

Originally from the Mad Cartel. Because he, Tantan, and Kosaka were all Japanese, they broke away from the Mad Cartel's Japan branch and founded Uragami. Standard Japanese. He calls them Kosaka-san, Tantan, Fukase, Hozaki, Karasuma, and Sorimachi.

Came to Tokyo from Kobe. Respects Hozaki. Kansai dialect. He calls them Kosaka-san, Tantan, Karasuma, Hozaki-san, Tatsumi, and Sorimachi.