Heize's song "On Rainy Days" talks about the melancholy feelings that come with rainy days. The lyrics describe feeling stuck in thoughts of someone, even though it's clear the relationship has come to an end. The chorus urges the rain to come and find them, to make them feel something, even if it's pain. The song's story is about the aftermath of a breakup, where the protagonist is struggling to move on. They keep holding on to memories and emotions, unable to let go completely. The rainy day becomes a metaphor for this feeling, as it brings up a sense of nostalgia and sadness. The song's English translation captures this sentiment perfectly, with lines like "Even though I know it's the end, even though I know it's foolish, even though I know it's over," and "The time we had is sharp and painful, like a knife." The song acknowledges the difficulty of accepting that a relationship has ended, and the bittersweet feeling that comes with looking back on what once was. However, the song also suggests that this pain is necessary for growth. In the bridge, Heize sings, "The rain will always come, it will keep pouring. If it stops, you'll follow along and slowly, little by little, you'll stop as well." This suggests that even though it hurts, it's important to go through these difficult emotions in order to come out on the other side stronger. Overall, "On Rainy Days" is a beautiful and emotional ballad that captures the feelings of heartbreak and nostalgia that can come with rainy weather.