The password is frequently the date of birth or the handle of the individual featured in the "preview" image associated with the archive.
Use exiftool to check for comments or creator metadata. Often, challenge creators leave hints in the "Archive Comment" section of a RAR file.
If the archive is password-protected (common for this specific file name): Candy-Tokyo_Teen_preview.rar
The final "flag" in this challenge is usually found by:
Run strings preview.jpg to look for readable text hidden in the binary code. The password is frequently the date of birth
Use the file command in Linux or a tool like TrID to confirm the file is actually a RAR archive and not a renamed extension (e.g., a JPEG with a .rar extension).
Finding a inside the image's "Save for Web" metadata. Common Findings for this File Archive Password: Often candy or a specific year like 2014 . If the archive is password-protected (common for this
Identifying the (GPS coordinates) of where the photo was taken (found via reverse image search or checking EXIF data).