Mihon is not available as a native iPhone app
You cannot install Mihon directly on iOS from the App Store
Use a web browser on your iPhone to access manga sources directly
Use a different iOS manga reader app that supports your needs
Use a remote Android device with Mihon and access it through screen sharing or remote desktop
Use an Android emulator on a computer instead of iPhone
If you only want manga reading, use an iPhone-compatible manga app from the App Store
If you want Mihon features specifically, use an Android phone or tablet