Yuno's experience at Yamabuki Arts High School has been a dream come true, and she has already learnt so much! Not just from her professors, but also from her friends and neighbors, who have become her second family and helped to make the Hidamari Apartments such a safe and caring place to live. But, as the graduation of her "big sisters," Sae and Hiro, approaches, it's time for Yuno to take on the same role for Nazuna, Nori, and the other aspiring young artists who've joined Hidamari's protective cocoon. It's also time to tackle some really difficult artistic work. That doesn't mean she won't have time to have fun with Miyako and the others, but it's absolutely time to make preparations for the future.