'Fox Rain' is called sun shower in English. There is a short story. Cloud loves fox, but she (fox) gets married to the other male fox. So, cloud cries even during the sunny day. There are many versions of folktales, and the origin of the story is not sure, but all versions of the story are 'bittersweet.'
Sun shower was rare rain when I was in Korea; however, I could observe sun shower regularly in Hawai'i. I graft bittersweet concept with Korea folktale and frequent rain in Hawai'i. The sun shower itself seems so far away from the warmth of winter, but its bittersweet associations is the emotional and poetic approach to the hardship in reality and how to make a breakthrough.