Naedoko Kaizou Dungeon -rj01347862- Portable -

: It could also refer to a manga or anime series that involves characters remodeling or interacting with dungeons in a significant way.

Naedoko Kaizou Dungeon [RJ01347862] is a tactical simulation game focusing on dungeon management, resource generation, and remodeling, where players act as a breeder to create monsters and defend against adventurers. The game features 2D art with a focus on biological transformation and character interaction, with progression unlocking enhanced modification options for the nursery system. You can find more details on the DLsite Product Page. Naedoko Kaizou Dungeon -RJ01347862-

After conducting some research, I found that Naedoko Kaizou Dungeon is a Japanese visual novel or eroge (adult-oriented) game. The RJ01347862 part seems to be a catalog or product code, possibly from a Japanese online retailer or a content rating system. : It could also refer to a manga

Naedoko Kaizou Dungeon is a well-executed title for a very specific audience. It succeeds as a dark, mechanical transformation simulator wrapped in a retro dungeon crawler. If you specifically enjoy body modification, non-con training, and clinical fetish art, this is a hidden gem. If you want a traditional RPG with strong story or vanilla adult content, look elsewhere. You can find more details on the DLsite Product Page

While many dungeon builders focus on combat, Naedoko Kaizou Dungeon focuses on the of the dungeon's design. It leans into the "Naedoko" (nursery/seedbed) trope, where the dungeon serves as a place for growth and transformation rather than just a graveyard for heroes.