The series revolves around Kaz Kaan (Jaden Smith), a vain and wealthy Magistocrat and his mecha butler Charles (Jude Law), as he balances a vapid and decadent life as a fashionista in the city with his demon-hunting duties managed by his stern Aunt Agatha (Susan Sarandon).

[citation needed] Kaz has taken to self-pity and "melancholy" after his recent break-up with investment banker Cathy (Alexa Chung) and only wishes to live a life of luxury with his socialite friends Lexy (The Kid Mero) and Gottlieb (Desus Nice).

However, the possession leaves Helena disillusioned with Neo Yokio and the capitalist system, eventually leading her to become a hikikomori, an anti-capitalist critic and a foil to Kaz's vapid focus on fashion and social status.

[citation needed] While the writing and post-production were done in the United States, the character design, pre-production and storyboards were created in Japan and much of the animation was carried out in South Korea.

[21] Dana Schwartz of Entertainment Weekly gave the first season a positive review, saying it was "both deeply ironic and entirely deadpan and we should be so grateful that this vanity-project-cum-genius-conceptional-art-piece somehow exists in the real world".

[22] Among the more positive reviews was Clio Chang's in The New Republic, who described Smith's performance as "exquisitely deadpan [..] that serves to heighten his detached snobbery" and that Neo Yokio "mostly feels like an introduction to what could be a really groundbreaking show", while also calling out its "cringe-worthy moments".