Sachiko Tachibana interviews for a babysitting job at the home of famous pianist Rena Hanai, who is somewhat surprised by Sachiko's persistence.

Sachiko decides to sneak into the room of Rena's father Minoru, a professor of criminal sociology, to search for evidence of Rena's crimes.

Rena has a realization as she watched her home surveillance feed. Sachiko begins to feel conflicted after Makoto makes a stunning confession.