The use of binaural microphones (like the KU100) to simulate someone whispering directly into your ears, creating a sense of physical proximity.
Confirmation that this version includes English subtitles or a dubbed track.
A common trope in these dramas where the listener "teaches" a character behavior that is socially "bad" or suggestive. -ENG- Bad Things To Teach Her -RJ01107130-
Most listeners access these titles through the DLsite English Store, which provides official translations. Using the code in their search bar will lead directly to the product page, where you can find: