
There's a morse code in the backside of each photocards, and if it's put together it becomes a full sentence:
S.Coups: Let's be each other's happiness
Jeonghan: Delightfully, beautifully, excitedly
Joshua: Always be happy, forever
Jun: I love you no matter what happens
Hoshi: Thank you, let's always be together
Wonwoo: Let's go and ride the boat
Woozi:...