I loved this game too, even simplier than the first, but like the previous one not boring, just a very short story about Mirena told in RPGM, but set in another universe where she's a cow girl instead of a witch. There are no fights nor items, just Mirena, a cow girl in a quest to save the nearby village from the milk thirst and to prevent them to starving with the help of the player.
If you liked her and her first game, there is absolutly no reason to not give this one a try too.
Like Mirena's Manor, this one has been recently released on Steam as well, as a free DLC to Milena's Manor House (or ミレーナの館 ), under the name of ミレーナ牧場. Presumably, like the first one, it has been released in a censored version too, so, again, it will be necessary to go to the publisher site muso-project to download the uncensored patch separately, additionally, depending on the language settings, the correct patch for that language is required.