Lezhin only translates exclusive webtoons to English. They don't translate Japanese manga to English.
But it's not a lezhin exclusive series. They have a licencing agreement with the Japanese publishers to translate it to Korean only. All of their English series are exclusively published by lezhin.
Akuma ni kiss wo
Akuma ni kiss wo raw
A heads up guys. I was impatient so I went on the Korean Lehzin page and bought chapter 7 to read. But it turned out to be just an extra chapter that I had already read on mangago in the other series of the other brothers that I can't remember. It was the chapter where all the brothers went to a festival and they all wore yukata. And then there was also an extra story about one of the author's older couple (the one where the uke was adopted or like got raised by the seme). So if you want to read that then I guess you're fine. I mean paying the money to support the author is also a good thing. It was just frustrating for me because I was really considering not spending money but could not help my curiosity about this manga. Haa, I guess it's fine.