Only the brave youth 
Can dived into the deeper sea,
to search for the magic mussels,
containing the colourful pearl.
To weather the danger of life,
find it fortunately.
Until the loved girl appears,
a pearl mussel he will give her.
As a symbol of love, 
she opens the mussels,
taking out the pearl
as this moment...

***

I don't know what foreword means, so... that's a small poem that contributed a little with the main idea of this fanfiction. 

I will make clear some stuff: first, I am Mexican and my English may not be good, but I'm doing my best, I promise; secondly, I don't know the exact personality of each KARD member, therefore I'm basing myself on the small things you can see in interviews and videos (for example M2 episodes) and what they say about them when they introduce each other, and so on, so I'm trying to make it realistic but being a fanfiction, you'll understand that there are things that need to be invented and my mind likes to fly, so I hope to do a good job mixing reality with imagination.