Explore Lulukoko, Tsukuyusa, and Westown in this multi-cultural farming game for Nintendo 3DS. [ Game Guide ] JP release = Jun 2016. NA release = Feb 2017. EU release = Oct 2017.
I'm half way through summer and I have it. Idk what the requirements are that unlock it. Probably a C rating with the village. I believe it was available after that.
I believe that unlocks after the first "Farm Advice" is complete. So focus on that. If I were to guess, I'd hazard that you've probably done everything but buy a second cow (you can sell it right away afterwards).