Yaeko Sakano, more often referred to as Yaeko Ueno, was an unmarried partner to Hidesaburō Ueno for about 10 years until his death in 1925. Hachikō was reported to have shown great happiness and affection towards her whenever she came to visit him. Yaeko died on 30 April 1961 at the age of 76 and was buried at a temple in Taitō, further away from Ueno's grave, despite her requests to her family members to be buried with her late partner.
On 1 May 2007, Nintendo acquired an 80% stake in video game development company Monolith Soft, previously owned by Bandai Namco. Monolith Soft is best known for developing role-playing games such as the Xenosaga, Baten Kaitos, and Xenoblade series.