Oh boy. That's actually a really hard question since @love is in a league of her own. But I'll give it my best shot by breaking down Ladykiller in a Bind into its component parts. That game is an adult visual novel about a cross-dressing lesbian who impersonates her twin brother on a cruise ship full of their "friends" from school.
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Does your friend enjoy adult visual novels with really good stories? If so, they might like @Bigg's Opportunity: A Sugar Baby Story.
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Does your friend just like really queer games about sex and gender? If so, they might like @yoplatz's cyberpunk dystopia Hardcoded
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Does your friend enjoy crossdressing? If so, they might like the romance-filled maid management visual novel Girls! Girls! Girls!?
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Does your friend generally enjoy the work of Christine Love? (I mean, who doesn't!) If so, they might like their classic JRPG Get in the Car, Loser! Complete Edition

