What?! I don't know where you heard that, but it is on Lezhin. I buy the RAWS from Lezhin Korean and I have 2 chapters of the side story that just came out. And if it wasn't on Lezhin anymore I would think the author would tell us on twitter. Probably just yet another fake rumor someone is spreading.
The english is 3 or 4 chapters behind the korean so the english version probably won't be released until the end of March or beginning of April.
I think I read somewhere that Love Shuttle is not at Lehzin's anymore... And the person said where it is now, but I can't remember... Anyone knows something about it? Thanks!