A tokonoma is a recessed space in a Japanese-style reception room, in which items for artistic appreciation, such as parchments or bonsai, are displayed.
After a few games, you may try this game variant which offers a more controlled experience by putting all Parchment cards in the first half of the deck, encouraging players to concentrate on these cards.
Once you have adjusted the deck depending on the number of players, take out all Parchment cards, shuffle half of the remaining deck and put it on the board. Then take the remaining half of the deck and shuffle it together with the Parchment cards.
Finally, put this pile of cards on top of the ones on the board. The game plays as usual.