Ep. 2: Sonata ignores Ardi's warning and returns to the theater, leading to her disappearance.

2

Ardi explicitly warned against returning to the theater, but Sonata could not forget what they discovered there. Consequently, she went back despite the prohibition. Later, Sonata turned up missing, leaving her whereabouts unknown. However, Caro had a good idea of where she went. The narrative focuses on the consequences of ignoring the warning and the subsequent search for the missing character.