遠野奈津子とは？ わかりやすく解説 - Weblio辞書
Lyrically, the song is a study in contrast. The title suggests freshness, zest, the bright yellow of summer. But Tohno delivers a narrative of dissolution. The "lemon" here is not a garnish for a sparkling soda; it is the sourness remaining after the sweetness has faded. It is the taste of a relationship that has passed its expiration date but hasn't quite ended. Lemon Song Natsuko Tohno
遠野奈津子とは？ わかりやすく解説 - Weblio辞書 Lemon Song Natsuko Tohno