Please, help me with this Yohji piece

Hi, any Yohji enthusiasts here? I would like to ask you guys for a help with Yohji pants I recently bought, these are my first purchase so I'm not sure about them being legit, I know about the tag reading but still, thanks for any kind of help!
(the runway photo are probably the same pants in white, haven't found them in black - not even sure if they made them in black)