The Hidden Dungeon Only I Can Enter - VGMdb

Animation by Okuruto Noboru, published by DMM.com LLC, released on January 09, 2021.

Audio CD (Part 1) - Redump.org : Free Download, Borrow, and Streaming : Internet Archive

The Hidden Dungeon Only I Can Enter - Ore dake Haireru Kakushi Dungeon Kossori Kitaete Sekai Saikyou

The Hidden Dungeon Only I Can Enter Review (Episodes 1-3) - Niche Gamer

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Volume 4 (Novel), The Hidden Dungeon Only I Can Enter Wiki