In the OVA "The Stranger From 10 Years Later," Kogorō Mōri appears within a future timeline sequence experienced as Conan Edogawa's dream. Set ten years ahead, he continues operating the Mouri Detective Agency. There, he muses over pop idol Yoko Okino's retirement from the music scene, reflecting his known interest in her career. Sonoko Suzuki visits the agency and consumes alcohol while discussing Ran Mouri's potential marriage proposal from Tomoaki Araide. Kogorō is present during this conversation where Sonoko explains Ran's intention to accept or reject the proposal based on her unresolved feelings for Shinichi Kudo. Later, within the OVA's present-day framing narrative, Kogorō visits Conan, who is recovering from an illness at the Mouri Detective Agency. He joins Ran, Sonoko, Araide, and the Detective Boys checking on Conan. After Araide examines Conan and confirms his improving condition, Kogorō participates in a group dinner hosted by Ran at the agency, consistent with his presence in familial and social gatherings involving the main characters.