|This article is about a/an web episode in Kamen Rider Zi-O.|
Who is The Worst Black? (最悪のブラックは誰だ Saiaku no Burakku wa Dare da) is the seventh episode of Kamen Rider Zi-O: Supplementary Plan. It was released on TTFC accompanying the seventh episode of Kamen Rider Zi-O as its "episode 7.5".
Woz comes to meet Sougo Tokiwa and sees that he is depressed. Sougo explains that after 7 episodes, he just realized that some of his filmed scenes were cut, like some unaired scenes from the first episode, so he is currently on strike. Woz tells Sougo that the others even had it worse, like Geiz, who had to wait for the entire day to film just for it to be cut in the final version. Angered, Sougo says it is worse than being exploited, and proclaims that If the directors were about to take a scene, they have to implement it on the episode. A face-censored and voice-altered 18-year-old female victim named "Ms. TK" agrees to Sougo's statement in a special live interview while sobbing. Woz deduces that due to each episode of Kamen Rider Zi-O having only a 30 minute timeslot, the directors must cut some scenes for the final cut version to fit. As Sougo and TK asks who is responsible for this, Woz says it is most likely directors T, N, S and M faults. so Sougo decides to go confronting them directly.
Woz starts to narrate like he always did at the start of every episode, but as Sougo's future has been cut by the directors for picking a fight with them, the page of his Great Calamity Calendar become blank. After he dramatically closing his book, Woz jokingly states that now he must find another demon king to serve. The episode ends with another cut scene in which Woz simply says "Woz is fraught with anxiety". And after the director says "Cut!", Woz becomes depressed as well.
- Woz (ウォズ Wozu): Keisuke Watanabe (渡邊 圭祐 Watanabe Keisuke)
- Sougo Tokiwa (常磐 ソウゴ Tokiwa Sōgo): So Okuno (奥野 壮 Okuno Sō)
- Ms. TK (ＴＫさん): Shieri Ohata (大幡 しえり Ōhata Shieri)
- Geiz Myoukouin (明光院 ゲイツ Myōkōin Geitsu): Gaku Oshida (押田 岳 Oshida Gaku)
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