This image was adapted from a picture posted to publicdomainq.net. All of the images on these sites are in the public domain i.e. CC0. This site is only in Japanese but can be easily navigated with Google Translate.
傘的女孩（＃1）
boots、female、girl、happy、people - cartoon - cute、Possible Game Art、puddle、rain、raincoat、umbrella、water
靴子、女、女孩、快樂、人 - 卡通 - 可愛、可能的遊戲藝術、水坑、雨、雨衣、雨傘、水
資料來源：openclipart ( https://openclipart.org/ )