Takeru Tenkuji

Takeru Tenkūji (天空寺 タケル Tenkūji Takeru) is an 18-year-old man who is the current heir to Daitenkū-ji. Ten years earlier, his father left him home as he went on a ghost hunting expedition. Before his father apparently died, he sent Takeru a gift of the tsuba from Miyamoto Musashi's katana which he wears on a necklace. As well as his interest in Miyamoto Musashi, Takeru enjoys reading from a book titled Stories of the World's Greatest People (世界偉人伝 Sekai Ijinden) and learning about the history and legends of famous historical figures. 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 (眼魂（アイコン） Aikon)[b] on his 18th birthday, a gift meant for him should his father have truly died. This allows him to see the monstrous ghosts known as Gamma who then attack and kill him, as they are after the Eyecon themselves. 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. The hermit tells Takeru he has 99 days to gather the 15 Eyecons of great men from history in order to fully come back to life through the Eyecon Monolith in his bedroom, as the hermit's magic is not powerful enough to truly restore him to life. However, after seeing his childhood friend Makoto Fukami become the cold Kamen Rider Specter as a result of his sister Kanon's body being trapped in the Gamma's world. When all 15 Eyecons are gathered by Chikara Saionji, Takeru's pure heart and willpower to be a Kamen Rider allows him to be uncorrupted by the Monolith's magic and he passes on getting his life back so Kanon can be saved.