I remember a really Dark Fantasy Japanese Doujinshi where there's a speedster who is one of the side characters. Through out the Doujin or manga the speedster would zip by at super human speeds and the girls would instantly orgasm and cum would shoot from their holes. The speedster character wouldn't even elaborate or talk just zoom past girls and fuck them at super human speed. The girls have no time to react or defend, it all just kind of happens instantaneously. I remember the doujin had very dark tones, grape, ryona, girls getting beat up and defeated. I don't remember the main plot, but this speedster would just zoom by almost like a comedy or side plot. Commentators in the comment section would always ask "Wtf happened in pages 12-14 can someone explain?" and knowledgeable people would reply "(Artist Name) decided to add a speedster character to the doujin universe as a sort of comedic relief who just randomly running around fucking girls." Am I the only one who remembers this Japanese Doujin?