Lifespan: Eiroku 1 (1558) to Kanei 11 (1634)
Other Names: Kaneshige, Kanesuke, [Common] Yoichi, Saburō-Shirō, Kurō
Rank: bushō, daimyō
Title: Director of the Imperial Cavalry of the Left Division
Lord: Shimazu Yoshihisa
Father: Kimotsuki Kanetsugu
Siblings: Sister (formal wife of Nejime Shigenaga), Yoshikane, Kanenaga (?), Kaneshige, sister (wife of Kimotsuki Gyōbu Shōyū), sister (wife of Ei Kaneari), Kanesada, Kaneaki, Kanenori, Kanemori
Wife: Second daughter of Kimotsuki Yoshikane (separated)
Kimotsuki Kaneaki served as a bushō and daimyō from the Sengoku to early Edo periods. He was the eighteenth head of the Kimotsuki clan of Ōsumi Province.
In 1558, Kaneaki was born as the son of Kimotsuki Kanetsugu, a daimyō in Ōsumi.
In 1571, owing to the death of Kimotsuki Yoshikane (Kaneaki’s older brother of a different mother), he obeyed the wishes of Onan (the formal wife of his deceased father) and Taki (the formal wife of Yoshikane), and received Yoshikane’s second daughter as his formal wife and inherited the headship of the clan. In 1573, he fought against Hongō Tokihisa of the Shimazu clan but was defeated. Thereafter, Ijichi Shigeoki and Nejime Shigeyoshi abandoned the Kimotsuki one after another so he surrendered to the Shimazu.
In 1574, the relationship with the Shimazu which has until this time been on an equal footing changed at once as he yielded allegiance to them.
In addition to colluding with the Hyūga-Itō clan, Kaneaki did not get along well with his formal wife, so he was forced by Onan and Taki to separate from his formal wife and expelled to Hyūga.
Kaneaki died in 1634.