You can find this episode on major streaming platforms including:
Gate 15th Anniversary Rewatch - Steins;Gate 0 Episode 21 Discussion 21 : Rinascimento of Image Formation: Return of...
This episode is widely considered a turning point in the series because it features the long-awaited return of the protagonist's "mad scientist" persona, Hououin Kyouma. Key Plot Features You can find this episode on major streaming