|Appears in||Samurai Sentai Shinkenger, Kamen Rider Decade (Cameo), The Fateful War, Shinkenger vs. Go-Onger, Samurai Sentai Shinkenger: Special Act, Goseiger vs. Shinkenger|
|Debut||The Gallant Appearance of the Five Samurai|
|Last Seen||Super Hero Taisen Z|
|Power Rangers Counterpart||Emily|
|Portrayed By||Suzuka Morita|
Kotoha is the embodiment of selflessness; caring greatly for other people, even feeling glad when something bad happens to her and only her. Kotoha is vastly insecure, and feels herself worthless due to her replacing her sister Mitsuba as Shinken Yellow. However, she also acknowledges her faults and truggles to overcome them by relying on inner strength. Due to her inexperience, she looks up to Mako and Takeru and tries to emulate them.
Mako also shares a close bond with Chiaki due to their shared inexperience and supports him fully.
The Shinkengers can utilize the generational power of Mojikara, which allows the wielder to form any object immediately available to the imagination by drawing it's Kanji into the air using the ShodoPhone or any painting device. Kotoha carries within her the Earth Mojikara.