If we analyze most 18+ games, then, in fact, the only difference is in the plot, style of drawing backgrounds and characters. Well, the presence or absence of appropriate or inappropriate mini-games.
The set of interaction options is the same everywhere; there may be only minor differences due to the characteristics of the characters. Since, in any case, for human-like characters the list of combinations is limited.
Therefore, the main difference between these thousands of games: plot, mini-games, design style. The rest is more or less the same.
I generally turned off 18+ with monsters in the settings and play this game as a fun RPG, with an interesting and slightly strange plot, and a wonderful graphic and musical atmosphere. Therefore, the gender of the characters, with this perception, is secondary. Because I am attracted by the atmosphere of the game, Granoria itself and its features, history. Well written world.