Wind: A Breath of Heart is a visual novel by Japanese game studio Minori. It was first released for Windows on April 19, 2002 with adult content. It was later ported to the Dreamcast and PlayStation 2 by Alchemist in 2003 with the adult content removed. It features voiced dialog for all characters except for the protagonist. It has been adapted into an anime series with thirteen episodes and four special ones (9.5, 10.4, 10.8 and 12.5), four OVAs, and a manga. An English-language fan translation of the visual novel exists.

The Windows version of the game went on sale on April 19, 2002. It was followed by the Soyokaze no Okurimono -Wind Pleasurable Box- on December 27, 2002 which featured a 16-minute OVA Christmas Special along with the game. In 2003, the game was released in two different versions with the Dreamcast version going on sale on January 30 and the PlayStation 2 version on December 18. June 2004 saw the first of 3 KSS OVA's go on sale on the 25th and on the 30th, the anime television series officially started to air. On November 5 of the same year, Wind - a breath of heart - Re:gratitude went on sale.

Makoto was born in Kazune city where he and his sister, Hinata, played with Minamo. After his father's death he and his sister as well as Minamo's family move away. When his family moves for the second time, he gives Minamo a harmonica and the two of them pinky-swear to meet again some day and marry.

The game begins ten years later. Makoto and Hinata return to Kazune and enroll at the High School where Makoto is reunited with Minamo. He learns that many people from the city have unique special powers. Hinata, for example, can jump higher than most 2-story buildings. Minamo can control the wind, Nozomi can create shockwaves with edged weapons, and Wakaba can cure wounds and slow diseases. The town is also home to a long series of murders and mysterious disappearances.

Professor Akihito, Minamo's father, research into the city's mysteries in an attempt to understand what caused these powers to develop, begins a chain of events and it is the player's goal to help Makoto uncover these mysteries while forging bonds with one of the five girls.

As the main protagonist, Makoto is impulsive but also compassionate towards the pain of others. He often acts without consideration for the consequences, which garners respect and bewilderment from the methodological Hikari.

She has practiced playing her harmonica for four years hoping for Makoto to return and keep his promise. Unlike Makoto, she takes their childhood promise seriously and wants to marry now that they are older. Throughout the game she is straightforward and assertive about her love for Makoto. Is the real sister of Hinata and Wakaba.

Makoto's athletic younger sister. Being very active, she commonly follows her brother around or pulls pranks on him. She carries a pair of binoculars which she uses to spy on things, and is fascinated with the blimp that flies over the city each day. She is hyper, and when she gets hurt, angry or confused, her favorite catchphrase is "Unyah~!" She is the real sister of Minamo and Wakaba.