You have to sickle the rice paddy today because it's your turn. This kanji also means number in a series, which is a lot like a turn. For example, you're number 3, so your turn will be number 3.
This turn-based rice sickle system is a contest as well! But, you are disappointed to find out that you have been banned from the game because of the performance enhancing steroids you've been taking.
Currently there are no similar looking kanji which exist in the WaniKani learning system