Kozeki Ui 古関ウイ- Sundress Prototype Design (Blue Archive ブルーアーカイブ)

seems like all the sundresses are cut in favor of actual swimsuits

UiSundress , very long hair, white sun hat, bangs, black hair, halo, twin braids, white dress, sleeveless dress, necklace, hat flower, hair between eyes, grey jacket, long sleeves, purple eyes, bags under eyes, off shoulder, grey cardigan, crossed bangs, purple flower, 

rolling suitcase, 

glasses, round eyewear, 

book,  blue footwear,