You can import your comics to Manga Storm CBR easily by using iTunes File Sharing, macOS Finder or iOS Files app. To do it, please connect your device to a computer running the latest version of iTunes and follow these steps,

First, copy comic files into the app.

macOS

1. Connect your device to your computer.
2. Browse your device in the Finder sidebar.
3. Select Files in the button bar.
4. Drag comic files you want to copy into the top-most directory of Manga Storm CBR
5. Wait for copying to finish.

iTunes (Windows/Mac OS X)

1. Connect your device to your computer.
2. Browse your device in iTunes and open to the "Apps" section.
3. Scroll down to the "File Sharing" section and select "Manga Storm CBR" from the "Apps" list.
4. Click the "Add" button under the "Manga Storm CBR Documents" list and choose comics those you want to copy.
5. Wait for copying to finish.

Apple's Files app (iOS)

1. Open the Files app (you can get it for free on the App Store).
2. Go to the location that contains comic files.
3. Tap the Select button
4. Select comic files you want to copy then tap the Copy button.
5. Go to [On My iPhone/iPad] > Manga Storm CBR
6. Long press at the empty space in the content view to bring up the menu and tap the Paste button
7. Wait for copying to finish.

Second, start importing comic files in the app.

1. Go to the "Home" tab of Manga Storm CBR.
2. Tap the import button on the top right corner of the screen and choose "Start import from: Local Files", the import process will start and the import screen will display.
3. After finish importing, your comics will appear in the "Unclassified Comics" section of the "Home" tab.

Note: To organize your imported comics, please move them to the "Collection" tab.