As of my last update, "Attack on Titan" is available for streaming on platforms like Crunchyroll and Funimation in many regions. Additionally, it may also be found on other services like Hulu, depending on licensing agreements and your location. It's best to check your local streaming services for availability, as this can vary by country and over time.

"Attack on Titan" has a total of four seasons. The first season premiered in 2013, followed by the second season in 2017, the third season split into two parts released in 2018 and 2019, and the final season began airing in December 2020. The final season is further divided into parts, with the last part concluding in 2023. The series is based on the manga by Hajime Isayama and has gained widespread acclaim for its storytelling, animation, and character development.

As of October 2023, "Attack on Titan" is available for streaming on Netflix in some regions, but availability varies by country. In some areas, it may be found on other platforms like Crunchyroll or Funimation. Check your local Netflix library to confirm if it's accessible in your region.

There is no Season 5 of "Attack on Titan." The series concluded with the final season, which is divided into multiple parts. The final season, titled "Attack on Titan: The Final Season," began airing in December 2020 and is split into three parts. The last part, which is set to wrap up the story, premiered in 2023. Fans can watch these parts to complete the series, as they cover the concluding events of the manga.