The Toku mini-expansion is a set of bonus reward cards, some of which are randomly placed on top of the large token piles each game. The first player to earn a given Large Landmark token, Geisha bonus token, or Enclosure bonus token also gains the Toku card on top.
Toku cards are worth one journey point if kept until the end of the game or they may be spent for a one-time special use - such as free landmarks, changing torii gates, or discounts when using the different game characters. In some cases, that could mean being able to use the vendor or samurai for free! You can also use several Toku cards on the same turn for a big play. The Toku mini-expansion gives another incentive to be first to accomplish certain objectives and creates dynamic plays later in the game.
The Koi mini-expansion is a second expansion for advanced players, in which each player is dealt a set of action cards at the start of the game.
Koi cards are worth one journey point if kept until the end of the game or they may be used as special actions for extra tokens, using multiple characters, etc. Players only get one of each action card, but they can use them whenever they want or in combination for huge turns. The Koi mini-expansion gives players extra flexibility and creates big scoring opportunities as the game progresses.