The role of Anna was originally for Angel Locsin, but then it was changed to Ellen Adarna. However, the role ended up going to Heussaff, creating controversies.
Anna's role was based on Naomi Morinaga's Japanese character, Annie of "Shaider". Copying her style or outfit.
The last time Solenn Heussaff did a cartwheel was when she's eight years old. So she have to rehearsed for one hour at her parents' garden to make her cartwheel scene in the movie perfect.