sallmzzx_
Zip Zephyr and Zie Zephyr are siblings who were abandoned by their parents. Their father disappeared who knows where without any explanation, while their mother died while giving birth to Zie. Because of that, their aunt and uncle adopted Zip and Zie since they're just a kid. their aunt and uncle didn't want to tell them about their parents who leaved them behind, but they have no choice about that, they need to tell them about that.
After they told Zip and Zie about their parents, they're just stunned and shocked. Zie just feeling sad, but Zip... she felt something... something that she didn't know... anger? probably. sad? she didn't think so. or something like... revenge? yes, ofc. Zip want to get revenge about what her father did to them-LEAVING THEM WITHOUT ANY EXPLANATION.
Zip is feeling so irritated about her father that he leaved them behind without any explanation, she felt that she have- no. she NEED to find his father, and take a responsibility to them... or even more?