ट्रिविया

Because Hideri is introduced in episode 8 of the original anime, he never makes it into the dub.

The behind the scenes of the dub production were chaotic to say the least.

There will only ever be 4 completed episodes of the dub due to production problems.

In November 2017, the opening theme of the series became a viral meme on Twitter and YouTube, which consists of adding an additional word to the opening part of the song: "Smile, Sweet, Sister, Sadistic, Surprise, Service...", followed by that word, which may refer to pop culture or another popular meme, regardless of whether it starts with the letter S or not.