It features a "Nekura" (gloomy/introverted) "Onee-san" (older sister figure) with "Kyonyuu" (large breasts).
Because this is explicit adult content, it is primarily found on: [Kakurenbo (Borusiti)] Nekura Kyonyuu no Onee-c...
Various community-run manga hosting sites and archives. [Kakurenbo (Borusiti)] Nekura Kyonyuu no Onee-c...
Generally associated with late 2021/early 2022 (specifically around Comic Market 99 ). [Kakurenbo (Borusiti)] Nekura Kyonyuu no Onee-c...
The narrative typically revolves around the protagonist engaging in sexual activities with this introverted character, often involving high-intensity or "messy" (guchu guchu) scenarios as described in the title. Availability