The protagonist of the channel and Yukari's boyfriend. He possesses the "ability to manifest the heart," which grows more powerful the stronger his feelings are. He loves children and is very kind. He once lost his life due to his mother Sagume's miscarriage, but his father Amaboshi retrieved his soul and placed it within his secretary Phanuel, allowing him to be born safely. Tone: Toward children: "...right?" "...you know?" (Gentle) Toward superiors: Polite/Formal Toward close friends: Casual/Frank He can transform into Kamen Rider Ex-Aid.

Gamu's friend and Reimu's boyfriend. He's a bit of a playboy but somehow likable. He can transform into Kamen Rider Para-DX.

Gamu's friend and a swordsman. Patchouli's boyfriend. He also commands the fairy maids at the Scarlet Devil Mansion.

A powerful Youkai who rules Gensokyo and is Gamu's girlfriend.

The shrine maiden of the Hakurei Shrine and Hiromu's girlfriend.

A magician living in the Scarlet Devil Mansion and the librarian of the Great Library. Zero's girlfriend.

Gamu's daughter. She calls Gamu "Papa." She can transform into Kamen Rider Build.

Gamu's daughter. She calls Gamu "Papa."

Gamu's father. He has a close friend named Gara. He has a researcher's temperament. However, when he goes about five nights without sleep, he has a quirk where he says outrageous things like, "Hey, why don't you steal Sagume from me?"

A Lunarian, Amaboshi's wife, and Gamu's mother.