Nako Oshimizu

Nako is a 17-year-old cleaning maid and waitress working part-time at Kissuiso. She has a shy and timid personality, with a tendency to avoid unwanted social interaction. She is, however, confident about her swimming ability, having been swimming since she was three, she was nick named the "kappa girl". She attends the same high school as Ohana, Minko and Yuina