Hello everyone, kekesed97 reporting...
Chapter 12.2 was released today, and we can expect that this series will go on hiatus once more. For how long, you ask? Honestly, I don't know.
But Chapter 12 was included in Volume 2 so we have no problem sourcing that. And apparently, the author resumed their other manga "Kunitama."
This series also went into hiatus last year, but I just found out recently that they have health issues last year, as published in their twitter post:
I hope everything's fine over there, and we can see Sana's adventure more.
I will wait a little bit before I decide to flip the publication status.