Now that Kumiko Oumae has enrolled in Kitauji High School, she hopes to forget about her past. Despite her desire for a fresh start, she gets dragged into the school's band club by her new friends—Sapphire Kawashima and Hazuki Katou—and is once again stuck playing the euphonium. As the band currently stands, they won't be able to participate in the local festival, Sunfest, let alone compete at a national level. The band's new advisor, Noboru Taki, gives them a choice: they can relax and have fun, or practice hard and attempt to get into nationals. Not wanting to repeat her mistakes from middle school, Kumiko is doubtful as to whether they should try for nationals. Amidst the chaos, she learns that her old bandmate, Reina Kousaka (who she had a bitter relationship with) has joined Kitauji's band club. Under the pressure of Noboru's strict training, Kumiko and her bandmates must learn to overcome their struggles and find success together.

Short specials included in the Blu-ray/DVD releases.

Kishimoto Kasumi, a 15-year-old girl, was supposed to live at her auntie's house in order to go to high school since April. However, when she moved to the house she was surprised with the fact that there were already four new male students living in the same house. To make the matter worse, that day while she was taking a bath, Takasugi Yusaku, one of those boys, came into the bath and saw her naked. This is how Kasumi's troublesome high school days started. (Source: AniDB)

Ever since she was young, Yuno has always had an interest in art. Now that she has been accepted to Yamabuki Arts High School, it means one thing—moving out. Living in a dorm at Hidamari Apartments alone, Yuno meets her neighbors: the hyperactive Miyako, the self-conscious Hiro, and the mature Sae. Despite their different personalities, they go to the same school, spend time together, and develop a strong friendship. Yuno's life won't be so lonely after all! Hidamari Sketch revolves around the antics and day-to-day lives of the girls living at Hidamari Apartments.