Koi is cupid in training and very clumsy girl. She is also shy and talks formally. Her speical item is a bow. koi it's very clumsy at first and get no stamps becuse she fail all her missions, because she can't hit any of her targets she just hit wrong white her love arrow's, hitting a cat or dog that make them fall in love white her...But her missions is to make humans fall in love! She start to practice together white a better cupid that also got a bow Rin and soon her bow skills get better and she clear some of her missions! She want to be a guardian angel!