The goal for most fans is preservation, not piracy. As the 3DS eShop fades into memory, the community's effort to decrypt and archive its vast library of DLC is a way to ensure that the artistry and work put into games like Aikatsu Stars! My Special Appeal can still be appreciated by fans for years to come.
Extra visual novel segments and side-stories featuring characters like Yume Nijino, Rola Sakuraba, and the S4 members are buried within the DLC partition. Decryption exposes the text files, making fan-translation projects possible.
For the average preservationist or retro-gaming enthusiast using modern emulators like Citra or specialized hardware modifications, raw encrypted data dumped directly from a system is unreadable.