Since I've posted a bunch of these already, here's a list of Japanese words containing English (Latin) alphabet letters, and the respective posts which talked about them. (in no particular order)
Some of these are wasei-eigo, meaning they're made up in Japan but out of English words. Some of these are abbreviations used in English too which I included because why not.
Note that since these terms are used in Japanese, the letters are pronounced in Japanese too. See katakanized English letters for how to pronounce them.
OVA
Original Video Animation. (wasei-eigo.)
Anime that's originally sold on VHS, videotape, discs, instead of airing on TV.
ONA
Original Net Animation. (wasei-eigo.)
Anime originally streamed instead.
OAD
Original Animation Disc. (wasei-eigo.)
Anime originally bundled with manga volumes as a bonus disc.
NEET (niito ニート)
Not in Employment, Education or Training.
(not wasei-eigo, but used mostly in Japan, originally from UK, it seems.)
NG. (enujii エヌジー)
Not Good. (wasei-eigo.)
(can't air on TV, "triggers me," etc.)