To be added
- Fred is seen wearing his mascot costume from the movie.
- One of Honey Lemon's paintings (the first one seen when she speaks with the art teacher) is fan art by Tumblr user Punziella.
- The episode's title has a play of words, since "week" and "weak" are pronounced the same way but it references the "Rivalry Week" tradition. At the end of the episode, Obake also uses double-meaning phrase challenges such as deliberately writing "whole" whilst secretly meaning "hole".
- At one point, during the double-meaning battle, clone Wasabi's headband is green, then changes back to red in the next scene.
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