In this context, "H" stands for Hentai , a prefix used for pornographic anime or manga.

Mesu Saga Persona 01, at its core, seems to refer to a specific genre or series within the vast expanse of Japanese entertainment, possibly tying into anime, manga, or video games. The term "Persona" is well-known in the context of a popular video game series developed by Atlus, which combines social simulation with dungeon crawling and role-playing elements. However, Mesu Saga Persona 01 might not directly relate to the mainstream Persona series but instead could denote a niche or fan-made creation.

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YouTube or Twitch might have streams or Let's Play videos of the game, offering a visual and often entertaining insight into the gameplay and storyline.