even Fate stay night have they own official Steam page and it is great

You can use this https://github.com/keiyoushi/tachiyomi-extensions

check this for iOS https://github.com/Aidoku/Aidoku

there is another good alternative called aidoku for iOS and we can read manga on similar fashion. But, we need to sideload it

uyouplus, Apollo, BHTwitter