Downloadable Soundtrack

Mature Content Description

The developers describe the content like this:

This DLC contains explicit adult audio content.
It features detailed sexual voice performances, including moaning, licking, and intercourse sound effects.
There are no visual depictions of nudity or sexual acts.
All characters involved are adults engaging in consensual acts.

About This Content

《ASMR Log File: TsukumoMabuchi / YukinoshitaOriyuki》

File Code: AUDIO_LOG_DLC_099_227

Contents

• High-quality binaural recording (MP3 format) ×2

• High-quality binaural recordings (WAV format) ×2

Recorded Audio Logs

• AUDIO_LOG_No.099 —「Practical Session After Warm-Up」
  　Signal Source：TsukumoMabuchi｜Occupation：Bar Madam
  　Description: Practical training conducted in a controlled test environment.
  　Includes recorded breathing variations, motion sounds, and verbal feedback.

• AUDIO_LOG_No.227 —「Special Sensory Therapy」
  　Signal Source：YukinoshitaOriyuki｜Occupation：Masseuse
  　Description：A unique massage therapy session performed in a sealed test environment.
  　Includes low-frequency whispers, subtle tactile sounds, and ambient reflections.

Notes

• Headphones are recommended:
  For the best stereo field and immersive experience.
  This DLC consists of additional audio content that can be enjoyed independently without launching the main game.

• Description：
  This add-on content serves as an extended audio record for the primary Observation Project,
  captured through internal recording devices within an isolated environment.
  The material is classified experimental audio — unauthorized redistribution or disclosure is strictly prohibited.

• Additional Note：
  Please ensure a quiet environment before listening.
  If any abnormal auditory phenomena occur during playback, stop immediately and report to the technical department.