Katsumi Sasahara

is the younger sister of Mayuko Sasahara.
==Character History==
She is the Chairwoman of the All-Japan Wit Society. At some point, she was taken control of by the older Sohei Gamma. She brings in Takeru and the Mysterious Phenomenon Institute to investigate an array of pages posted on her door saying, "This door must not be opened," believing it to be a riddle (she'd heard of Takeru's wit from her sister). When Takeru tries and fails to use the Ikkyu Eyecon, she says she can help, but takes off running with it, the Sohei Gamma intercepting Takeru. However, Makoto snatches it from her with the Gan Gun Hand, returning it to Takeru. The Gamma then takes her as a hostage (with her threatening him, much to everyone's confusion), demanding they bring him the Ikkyu Eyecon and retreating. She is asleep at his hideout when Takeru and Makoto arrive to fight the Gamma; after he is defeated, she returns to normal.
Back at her door, Takeru finally solves the riddle of the pages: her room is the next one over, her neighbor put these pages up because she's always getting the doors wrong. 
==Personality==
to be added
== Family ==
Mayuko Sasahara.png|Mayuko Sasahara(Older Sister)
==Behind the Scenes==
===Portrayal===
Katsumi Sasahara is portrayed by , who later portrayed Asuna Karino/Poppy Pipopapo in Kamen Rider Ex-Aid.
==Notes==
*to be added
Category:Mysterious Phenomenon Institute clients
Category:Civilian
Category:Ghost Characters
Category:Special-exclusive Characters
Category:Relatives