A Promise to Remember

Meet Alliah Canfer, an ordinary highschool and graduating student. She always wishes to have a good life and fulfill the promise she and her childhood friend made. She was always waiting for him, but he never returned. Now her mission was to find the missing boy she made a promise with.

And here comes Cail Sonder, a popular guy in their school and also made a promise from a childhood friend. But Cail was wondering where the girl is, he never found her. So his mission was to bring her back.

As the two people were looking for their partners, the two of them encountered and met. But they didn't know each other's missions.
As Cail was trying to know her he heard something he shouldn't have.
Guess what? He heard that Alliah had a childhood friend whom she made a promise with.

Thus, this time Cail got curious and suspected Alliah as his long childhood friend. But it was just his suspicion and he is not pretty sure about it.

But will they know each other as the childhood friends before?