This appears to reference a specific ASMR / voice work title: ( Nemuru Koneko, Suimin no Machi ) — RJ01062044 on DLsite.
: Most available patches cover the UI and basic dialogue. However, because ASMR titles rely heavily on the feeling of the voice acting, some players find that reading subtitles can slightly break the immersion if the goal is to fall asleep.
: A fan-made English (or other language) localization that replaces the original Japanese text. This is common for titles that do not receive official Western releases.