The "deep feature" refers to a specific content update or technical adjustment within Let the Nightshine In , a visual novel developed by Sieglinnde In version v0.19 Chapter 2

Dialogue Overhaul: In the Sharing Route, dialogue between the protagonist and Ariana has been significantly expanded to show emotional depth and relationship growth.

Story Development: If you're working on a story and need suggestions on plot development, character arcs, or world-building, I can offer guidance.

I was unable to find a specific official report or widely-documented summary for a title called " Let the Night Shine In

• Option A (Polite): Increases Humanity/Decency. Unlocks a helpful hint later in the chapter.
• Option B (Dismissive): Increases Dominance. Required for certain "darker" romance routes.