风のアルペジオ (Kaze no Arpeggio) - Giga

This song comes from the adult love adventure game "The Promise I made over this Blue Sky (この青空に條條を―)" released by the Japanese game brand Giga. The game was launched in 2006, and an anime television series was made in the following year. The game was later ported to PS2, PSP, PS Vita and other platforms and adjusted the content accordingly. There is also another guitar version of this piece.