Tsukiko and Yōto are brought back ten years in the past by the cat god. As they head to the Tsutsukakushi mansion, they meet the younger Ponta, Mai, Azusa, and eventually Yōto, much to Tsukiko's amazement. Shortly thereafter, they meet Tsukiko's mother, Tsukasa, who is brash yet somehow soft towards the younger Yōto, who at the same time badmouths him. Through the younger Yōto, Yōto and Tsukiko are invited in for dinner at Tsukasa's mansion, which is in slight disarray. Here, Yōto and Tsukiko discover that Tsukasa is currently living alone and the younger Yōto constantly visits her to keep Tsukasa company, much to the shock of Yōto and Tsukiko. Meanwhile, Yōto claims that he does not remember anything about interacting with Tsukasa, and later learns that her daughters are currently living in Italy after the death of Tsukasa's husband.