A heightening of emotions, where the voice acting often shifts to a more desperate or intense tone.
Based on the title provided, this appears to refer to a specific genre Visual Novel or Doujin game, likely from the RJ01319175 (and related RJ326...) DLSite catalog. The title "5 Days of Separation" suggests a narrative-focused experience where the protagonist is separated from their partner for a set period, with the player often witnessing the partner's potential corruption or activities during that time. 5 Days of Separation - Main- -RJ01319175 RJ326...