If your device supports it, consider moving data to an external storage device. This could free up space on your device and help you bypass the error.
When the game attempts to download assets (characters, voices, L2D animations), it performs a specific calculation. If the available space does not meet the game’s (often 2x to 3x the actual download size), it throws code 80103 to prevent data corruption. blue archive not enough free storage 80103
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Error 80103 is almost always a device-side storage limitation, even if your storage meter looks okay. The most reliable fix is to aggressively free up 5+ GB, clear the game’s cache, and restart your device. When in doubt, a clean reinstall solves the problem 9 times out of 10. If your device supports it, consider moving data