Warm piano and soft synths wrapping around a couples-focused romance like a Sunday morning playlist. Koibito Doushi de Suru Koto Zenbu is a 2008 PC visual novel and the soundtrack leans hard into domestic sweetness. "心のアルバム" has this nostalgic photo-album feeling, gentle and reflective.
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"陽だまりのハーモニー" is pure sunlit warmth. Then "悪ノリロケンロー" drops in with chaotic rock energy and completely breaks the mood in the best way. "星屑の涙" brings the emotion with a starlit sadness that sticks with you. The main vocal theme "こいびと☆アクセント!!"
gets four versions plus two remix editions, which is a lot of mileage from one song. The remix versions actually add enough difference to justify existing though. Good comfort listening for anyone who wants their VN music sweet, sincere, and occasionally silly.