A few translation niggles that bothered me, but in the raw Zel says that Wavy was the waitress before the one before the one before the one before Meidri (メイドリーの前の前の前の前にいた'), also that last page explanation from Ivy seems really off; Meidri is asking Ivy how long Zel had been at the pub, and she mentions that Zel's previous partner married the previous owner, and she was born from them; so he's been going there before she was born and thus she doesn't know anything before that.