If you are using an NSP backup, always install updates in order (1.0.1 → 1.0.2 → 1.0.3). Do not skip versions, as some DLC flags are tied to incremental patches.
While the base game focuses solely on Asuka, additional downloadable content (DLC) allows you to experience similar intimate stories with other fan-favorite characters. Each DLC "Course" functions as a standalone narrative with its own unique scenes and personality-driven dialogue: Senran Kagura Reflexions Review - Nintendo World Report