Follow the steps to cast Crunchyroll through Chromecast:

1- Setup: Ensure your Chromecast-enabled device and your iOS device are connected to the same Wi-Fi network.

2- Open the Crunchyroll App: Open the Crunchyroll app and find the anime or show you want to watch.

3- Screen Mirroring: Use the Cast for Chromecast app screen mirroring feature to mirror your device’s screen to your Chromecast-enabled TV. 

4- Choose Chromecast: Select your Chromecast-enabled device from the list of available devices.

5- Start Mirroring: Your device’s screen, including the Crunchyroll content, should now be mirrored on your TV.

Or 

1- Open Browser: Launch your Cast for Chromecast and use the app’s web browser on your iOS device.

2- Go to Crunchyroll: Visit the Crunchyroll website (www.crunchyroll.com) using the browser.

3- Video Selection: Choose the video or show you want to cast from the Crunchyroll website.

4- Choose Chromecast Device: Select your Chromecast device from the available devices after discovering the castable link.

6- Start Casting: The video should play on your Chromecast-connected TV.

7- Playback Control: You can control the playback, pause, and play the video using the controls in the browser.