So this rumour had been gaining traction today :-
http://m.entertain.naver.com/ranking/read?oid=076&aid=0003219755
http://netizenbuzz.blogspot.com/2018/02/japanese-av-star-mikami-yua-to-debut-in.html
https://www.koreaboo.com/news/japanese-pornstar-reportedly-debuting-kpop-girl-group-next-month/
Lol at the comments. Don't they know that their own pop industry is also a very dirty place as well ? Evident by a death of a top star just last month ?( http://variety.com/2017/music/asia/...d-suicide-note-k-pop-pressure-1202644698/amp/ )
I let people be the judge to see if Mikami have the stuff to make it :-
But everything is just a rumour since there are no credible sources to back it up as of current.
in Korea? nah there's just waaaaaay too much competition there, I give her 20% chance to make it, the only unique thing she has is that she's a JAV star, but you can't really play up to that a lot over there