The Elderly Cat is a character in Toro! Let's Party!. He is the organizer for the annual New Year's Fan-tan Contest, which he holds in his somewhat run down apartment.
The contest has not seen many participants in recent years, and has been put off many times for this reason, although Elderly Cat is accepting of this fact: he believes that the contest has run out of style, and it was fate that he and the contest would be forgotten.
After Toro gathers his friends to participate in the Fan-tan Contest, the Elderly Cat lets him live in his apartment, effectively becoming his landlord. The apartment is cleaned up and fixed by Toro, and becomes the main setting of Mainichi Issho.