Naotaka served in the Siege of Osaka in his brother Naokatsu's stead, where he would gain tremendous favor for his exploits at Tennoji. After the battle, he would be granted his brother's lands at Sawayama in Omi province. He would finish the construction of Hikone castle in 1622, a project which had been started by his brother in 1603.
Both Naotaka and his father Naomasa are playable characters from the Eastern Army in the original Kessen.
Hikonyan, mascot of Hikone Castle, is based a folktale about Naotaka saved from a lightning strike by a Maneki Neko.