The past memories(the aftermath of tragedy 3)

Story:
When Johana's brightness shined the cave,they told Shin pea about his past.
But Johana was serious towards him and held up their symbol(the purple swirl with a crescent moon).
they told Shin pea that they both escaped together from the Blue void,but he died from a panic attack.
So he holds up his symbol(the four pointed tail fin) .