Nekopoishounengaotonaninattanatsu01 - [patched]

This is likely:

Independent Japanese creators frequently publish voice-acted audio dramas (often utilizing binaural ASMR recording techniques) on platforms like DLsite. These stories often feature highly specific character archetypes, such as a "cat-like younger boy." A title tracking his growth over a summer break fits perfectly into this medium's naming conventions. 2. Indie Manga and Light Novels nekopoishounengaotonaninattanatsu01

The storyline centers around , a young boy navigating life under the care of his older sister, Reiko, following the tragic loss of their parents in an automobile accident. The inciting incident occurs during a typical summer day when Ryuuki and his friends get together to watch adult entertainment for amusement. nekopoishounengaotonaninattanatsu01