Where does the LINE app store pictures and video files? Where does the LINE app store pictures and videos that are received through it?

I don't see them in Gallery.
Pictures and videos from the LINE app are stored under the following directory:
 /sdcard/Android/data/jp.naver.line.android/storage/gallerybig


All the audio files are placed under directory:
 /sdcard/Android/data/jp.naver.line.android/cache/mo/(folder)/[audio files]


Profile pictures are cached in directory:
 /sdcard/Android/data/jp.naver.line.android/storage/p



Just rename the files to .jpg to view them.
Update:
With recent update, the download folder name for image, video, and voice files has been changed to LINE. Please check the LINE folder when you look for files.
Update on 18 Feb. 2021
Today I check for a video (*.mp4) file, and find it deep somewhere under .../storage/mo with strange folder names, so you'd better use a file manager to search it.