I don't know about guilty pleasure, but I must resort to watching Saki K. in secret because anytime anyone in the house sees it on, they go "How many times have you watched that?"
I once wrote a Saki K. fic where I used some lines directly from the show (As it was set during those episodes) but didn't check for accuracy; When I re-watched, I realized I got them all accurate to the English dub! Hehe ...

Uhm ... Seriously, what does "guilty pleasure" even mean? It's hard for me to say I feel shame while indulging in interests because I generally stay away from things I don't approve of ... Unless it's embarrassing, in this context? In which case, I'm open about anyway. I guess I couldn't watch Miraculous for a long time due to second-hand embarrassment and the animation styling making me feel weirdly dirty(?) ...