He is brought back to life by a mysterious hermit who grants him the ability to transform into Kamen Rider Ghost to fight the Gamma.

This allows him to see the monstrous ghosts known as Gamma who then attack and kill him, as they are after the Eyecon themselves. Wishing to follow in his father's footsteps as a ghost hunter, Takeru laments being unable to see ghosts, which neither Akari nor Onari believe exist, until he receives an item called an Eyecon on his 18th birthday, a gift meant for him should his father have truly died.

As well as his interest in Miyamoto Musashi, Takeru enjoys reading from a book titled Stories of the World's Greatest People and learning about the history and legends of famous historical figures. Before his father apparently died, he sent Takeru a gift of the tsuba from Miyamoto Musashi's katana which he wears on a necklace. Ten years earlier, his father left him home as he went on a ghost hunting expedition. Takeru is an 18-year-old man who is the current heir to Daitenkū-ji.

Kamen rider mugen damashii