That main theme shows up five different ways across sixteen tracks and somehow never gets old. Aikagi's 2002 Windows soundtrack keeps rearranging "Three mugs" from a full vocal version down to a confession scene variant and finally a family arrangement, each one recontextualizing the melody.
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The standalone tracks carry that early-2000s visual novel warmth. "Gentle days" and "Sunny spot" are exactly what they sound like, while "Tension" and "Overflowing emotions, connected hearts" add the dramatic counterweight.
Simple MIDI-era instrumentation, but the writing is solid. If you're into how one motif can stretch across an entire emotional arc through arrangement alone, this is a neat little case study from the PC VN golden age.