A Fairy and a Tiger

What happens when Gray has a little sister named Kōri but the tenrou team disappeared along with the island and as Kōri grew she got stronger and became a triple S-class mage with all kinds of powers but mostly sticks with ice dragon slayer what happens when they come back and join the GMG (Grand Magic Games) but what happens when it is mating season and Kōri doesn't know about it will she find the one for her (It was Sting hehe) will they fall in love with each other keep reading for more