In this world all type of creatures exist but every one co-exist whitout any war and with respect.

One day while chuuya run away from the castle because she didn't want to have classes about her role as the next queen of the sea she was swimming she saw dazai who was trying to kill herself by drowning chuuya saved her and strated to talk to her and from them on they meet almost every day in the sea shore the both girls catched feelings for eachoter and are dating siren humans relationships and same gender relationships are acepted so everyone knows about them and how chuuya the next queen of the sea is dating a human girl

Today was one of those days chuuya had just arrived in their usual spot where dazai alredy was sitting in the beach close to the sea