This is part of the reason I was hesitant to start playing Shadowverse. My parents set my older brother's Pokemon collection ablaze when he was a kid, and they set my MtG cards on fire about a year ago. Even playing something like "Warlock" in HS is risky, because they think that I'm practicing "witchcraft." I can imagine having a sexy demon would be worse, lmao. But at a glance, HS is much less conspicuous than Shadowverse. Usually, you don't have enough time to read the card texts as they're being played, but in Shadowverse, they would probably get suspicious just by looking at the icon itself. But thankfully, I can usually just Alt-Tab when they happen to walk in, or just quit the game.
Added after 13 hours and 23 minutes
I should probably wrap things up.