My idea comes from the random song challenge. One rule says that you can skip one of your guily pleasures. But I am curious at your guilty pleasures. This tread isn’t just about vkei guilty pleasures but in general guilty pleasures. You can write about every guilty pleasure you have.
So I’ll start. My guilty pleasure is to eat rice with a sauce on top with plain Jogurt.
I sometimes listen to Justin Bieber - Baby unironically because it’s a bop, but I always pretend that I’m listening to it ironically just for the nostalgia. Deep down in my heart I know that song is fire. I always get hyped up when Ludacris starts spitting bars in that song and I can’t lie anymore. It’s a goddamn bop.
Mine is drinking milk tea. It’s my fav drink, but I sometimes want to reduce my sugar intake. 
I like to enjoy things earnestly, so I don’t attribute guilt to many of my pleasures. I love pop music, kitschy shit, etc., and I think it’s healthy to enjoy things without shame.
Weed and caffeine are indulgences I’d probably be better without so, there are those. For a more traditional answer, cartoons and shows I liked as a kid, as well as a few bands from back then, are things I still get a lot of enjoyment out of despite knowing that’s mostly wrapped up in nostalgia. These, I feel, are the most guilt I get from my pleasures, as nostalgia is an uncritical form of engagement. I’m not above it though - I’m just not about to brag about my love for stuff like Yellowcard, Weird Al, and early 2000s Nickelodeon shows.
None of my pleasures are guilty, I have zero shame haha
I have playlists that go from Opeth to Adele to Joe Diffie to SOPHIE to Tyler the Creator
No shame, no guilt, just tunes <3
I have an addiction to reaction videos, ranges from music reactions to movie trailers
i just like seeing how people discover something new that they like
Dollar tree. I swear that place is like crack to my wallet 
There’s a very special joy in watching a reaction video from somebody who’s watching like, a music video from a band you adore and they’ve never heard of, and seeing them in real time fall in love with the music. As cheesy as it is that’s why I love so many of the reaction vids to Dir en Grey’s Vinushka - yes it’s an overly obvious thing to show to western metal fans, but seeing some people react to the ANDROGYNOS performance has been so heartwarming for me
I uhh… follow alot of Cosplayers and H-artist on Twitter even though i was trying to get out of orn addiction.
extremely lofi ASMR youtube channels with like 100 subs
my guilty pleasure is following a lot of vkei artists on twitter and instagram because they’re good looking, in reality i can’t stand their songs
Ignoring all my adult responsibilities such as laundry, cleaning or cooking and looking at stuff on my phone/computer instead (today’s a triple whammy, I’m doing all three )
Other than that I feel like I’ve gotten over the “guilty pleasure” mindset, certain things bring me joy and life’s too short to be ashamed about stuff that only affects my day to day life
Gacha games
Kemono VTuber (with usually less than 1000 followers) ,
I can’t watch most of their (or any VTubers) content for more than 2 minutes at a time, and when they do music covers is it usually a heartless adaptation of some random famous/trending Vocaloid song with bad vocals but simply alone the whole virtual character thing keeps me invested enough that I can’t actually stop with them entirely.
The Insulated World, transgender porn, eating a lot of fish (also eating it and some other meat RAW), swimming in rivers/lakes
Oh, and whatever music that I’ve heard in various racing/GTA/other games that goes outside of my genre, but somehow sounds nice (pop punk, some bubbly pop stuff and etc).
chat with different beauties
Buying Yu-Gi-Oh Cards + Gacha Games.
I’m not embarrassed about liking pop music or boybands, but this song is a guilty pleasure for me because I don’t actually find any members of the group attractive. I just think it’s fun.
My guilty pleasures include almost being addicted to bakery sweets when I’m trying to lose weight (especially during the holidays), sitting on my ass and scrolling the internet instead of actually doing something productive, watching lolcow troll content, watching ASMR vids, and still being a yaoi fujoshi following many artists (including regular porn artists as well).
Oh, and my kote-loving ass has also become a bit of a kirakira kei fan.
Sometimes i will fashion my blanket into a kimono and go to a room with space like the garage, or the basement with my bass or ibanez and play by ear whatever im listening to and pretend im in a vk pv. The hand movements, the swaying, the guitar swinging, It’s fun but i always end up feeling a bit goofy afterwards lol.
I also practice manic vk screams and menhera mumbling whenever I know im alone.