For years, Yuno's dreamed of attending Yamabuki Arts High School; but now that she’s been accepted, it means the scary prospect of moving away from her home and family for the first time! Fortunately, Yuno quickly learns that if her new neighbors at the eclectic Hidamari (Sunshine) Apartments aren’t technically family, at least the majority share the bond of being fellow art students. From second year students like Hiro and Sae, who try to behave like helpful older sisters (mostly successfully,) to her hyperactive new neighbor, classmate and best friend Miyako (who has the scariest apartment ever,) Yuno begins to build the support network she’ll need for dealing with strange characters like her oddly masculine landlady, her cosplay obsessed home room teacher, her tooth-chattering principal and all of the other odd denizens who inhabit her chosen world of art. It won’t be easy, and it won’t always be pretty, but with her friends at her back, Yuno’s going to reach for the stars in HIDAMARI SKETCH!
Once school lets out for the day, Yuno and Miyako go play in the school. After they are done playing, they go to Hiro's apartment because Yuno wants to thank her for lunch.
Yuno's class has been given the assignment of designing the new sign for the Hidamari Apartments. Sae discovers Miyako pays less rent than she does, so she sets out to find out why.
Today's class assignment is to sketch a bust of Brutus.
During class, the assignment is to sketch something from outside. Later, Yuno and her friends go to a karaoke bar.
Yuno misses school due to an illness. While she rests, she has strange dreams.
Miyako sets up an inflatable pool for Yuno and all their friends. Later, they go to the beach.
A typhoon is responsible for the cancelled sports festival.
The deadline for Sae's next book is fast approaching, so she is hiding from her editor.
Yuno notices when a man drops something, and she returns it to him. In appreciation for this, he gives Yuno four lottery tickets.
Yuno's unfinished painting is entered in to the cultural festival by Miyako.
The day's art lesson leads the class to the zoo.
On Christmas Eve, Sae's younger sister Chika comes to visit. Sae, Yuno, Miyako, and Hiro show Chika around Yuno's school.
On a hot summer day, Yuno and her friends visit a local swimming pool, where Yuno's inability to swim and fear of water is revealed. Meanwhile, Yoshinoya, the Hidamari landlady, and the Principal spend time together in a school swimming pool.
To Yuno, Miyako, and Sae's surprise, Hiro receives a love letter from a 3rd grade classmate. After hearing the news, Hiro's friends can hardly concentrate on the class as they are very curious about the love letter.