I should outline steps on how to handle RAR files, mention the importance of legal access, and maybe touch on alternative ways to manage split files. Also, emphasizing the risks of downloading from unverified sources to avoid malware. Need to make sure the advice is clear and that the user isn't led into any unethical behavior. Also, check if there's any official way to access FC2 content, but since it's often adult, maybe that's not appropriate here. Need to stay neutral and informative without endorsing illegal activities.