Do the symbols used for the Dorok language bear any relation to kana or kanji?
No, there is no systematic reference for the Dorok language as far as we know (you might want to try). However, the characters sometimes look like a very old form of Kanji (Chinese characters) back in the Chou dynasty or older. For example, in a scene where the Doroks were angry, a symbol which looks a bit like a kanji for “anger” was used.They also look somewhat like Bonji. Bonji are a sort of Sanskrit which are used to express names (and mantras) of Buddhist deities. You can find them on statues or temples. In some branches of Buddhism, they are treated as magical symbols. Many mangas and animes borrowed from Buddhism use them as magical spells.
No, there is no systematic reference for the Dorok language as far as we know (you might want to try). However, the characters sometimes look like a very old form of Kanji (Chinese characters) back in the Chou dynasty or older. For example, in a scene where the Doroks were angry, a symbol which looks a bit like a kanji for “anger” was used. They also look somewhat like Bonji. Bonji are a sort of Sanskrit which are used to express names (and mantras) of Buddhist deities. You can find them on statues or temples. In some branches of Buddhism, they are treated as magical symbols. Many mangas and animes borrowed from Buddhism use them as magical spells.