Haven't we already been through this issue before? At least last time there were several week long gaps between the pages and there wasn't any indication it was going to be doujin length in the first place.
I have a feeling this was an accidental upload, even though I have no idea what the upload system looks like.
Towa: "So.... yeah, we really got drunk last night and our "magic" intertwined...... kinda"
Kanata: "I don't know how it happened, just when we woke up, we already in the bed, naked"
For context (well, "context"), the only reason this ship's a thing is because this artist is a giant Ningguang simp and has started drawing her shipped with everyone