The keyword likely refers to a specific dōjinshi by an artist whose name starts with (e.g., Hyocchi, Hyouma, or Hyji – a possible misspelling of "Hiji").
This is a niche but persistent category within adult manga and (erotic games). Titles often use first-person pronouns like Boku (gentle/childlike "I") and phrases like Konna Koto ("this kind of thing") to imply shame, excitement, or taboo discovery. -Hy-dou--Hyji---Boku-ga-Okaa-san-to-Konna-Koto-...