You live in a world where you have 5 or more soulmates and when your turn 17 you have to chose one of them and when your 18 you have to make your choice and start a family with them or more and that exactly happened to you your choices were all girl 5 girls which were:

Yeji she is a siren

Lia an angel

Ryujin a witch

Chaeryeong a vampire

Yuna a fairy

So are you gonna chose one now or wait a year and spend time with them get to know eachother so you can chose one??