It looks like you’re referencing a specific ASMR/simulation title:
RJ01324 – Suyasuya Densha / Suimin Maru (likely a relaxing “sleeping on the train” or “sleep aid” simulation from a Japanese doujin circle).
Based on the product code , this is the "Sleep Simulation" game Suyasuya Densha (Sleepy Train) developed by Maru-shiki suyasuya densha suimin maru simulation rj01324 updated
"Suyasuya Densha Suimin" (RJ01324) is a specialized simulation experience developed by Maru Technologies (often referred to as Maru Simulation). The title translates roughly to "Peaceful Sleepy Train," reflecting its core purpose as a relaxation and sleep-aid tool. Core Concept Graphics: The game utilizes a 3D engine, typically
The update title includes "Suimin Maru" (Sleep Circle), and that is the headline feature. The developer has introduced a communal sleep meter. The "Maru" Overhaul: What RJ01324 Changes The update
focuses on its unique blend of train travel atmosphere and relaxation mechanics. Recently updated to enhance performance and add content, this simulation allows players to experience the soothing environment of a Japanese commuter train. Game Overview