Both. Since it's a game with multiple protagonists, you'll have male and female friends for all three main characters. There will be scenes with them if you want to share.
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Yeah, during the game, you may or may not discover this, and you may or may not agree with it (for example, you can take advantage of it). There are many choices that lead to different scenes, depending on your taste. The game's story focuses on spying/peeping with some sci-fi, so expect a lot of that.