Utaku Tetsuko increases the cost of cards 'played from hand'. Does this cost increase apply to cards played with Artisan Academy, Pillow Book, Hidden Moon Dojo, Infiltrator, Stolen Secrets, Kyuden Isawa or Togashi Mitsu?

Utaku Tetsuko does increase the cost of cards played as if they were in your hand: Artisan Academy, Pillow Book, Hidden Moon Dōjō, Infiltrator, Stolen Secrets, Kyūden Isawa, and Togashi Mitsu.

[Tyler Parrott, 12 October 2018]