Kaho was scouted in Omotesandō while still an elementary school student, and she began her career as a model for Japanese teen magazines.

[2] In 2007 Kaho won her first major acting prize, a Hochi Film Award in the Best New Artist category.

[6] Kaho played numerous TV and film roles throughout her teen years, but Mark Schilling of The Japan Times noted that she was often typecast as a "wide-eyed, pure-hearted innocent.

"[7] In 2016 Kaho was nominated for a 39th Japan Academy Prize in the Best Supporting Actress category for her performance in Our Little Sister, but did not win.

[8] In 2017 she played the role of K in the Sono Sion-directed Amazon Video drama Tokyo Vampire Hotel.