This is not actually on WEBTOON it’s probably on the Korean one and that’s why people are translating it and posting it.
It is on there. I am in the UK and it is listed as "Your Throne" and fully translated.
https://m.webtoons.com/en/fantasy/your-throne/list?title_no=2009
I’m sorry it is on there I must’ve looked up the wrong title
the title (korean) is exactly i want to be you just for a day.
the webtoon official titile in Bahasa Indonesia is I wanna Be U
and the english webtoon is Your Throne.
It wasn't until recently this year or last year that it got an official English translation and put onto WEBTOON. That may be the reason why, since the eng. Chapters are behind than the unofficial
it's on Korean WEBTOON (naver webtoon, the original publishing platform). Naver are the company who owned line and webtoon app. their main competitors are kakaopage (owned by kakao corp, which also bought daum webtoon) and ridi corps (ridibooks, where we can buy delicious smut novels lol).
Naver expands WEBTOON app overseas and using regional approach in one app (that's why we can jump region in webtoon), while kakaopage using more restricted move (each region has their own app like indonesia & thailand), and also has some of their releases in t4p45 and T4PpYtoOn. ridi corp launched manta, official subscription based app.
Why are people posting webtoons that are free from the source? You can find this on the site or app called Webtoon. If you read it there the author will get paid.