Not yet ready to let Jeong-u go, Geu-ru runs away from home. As their cohabitation comes to an end, Sang-gu's qualification as a guardian is determined.
A user manual for a device unseen at the crime scene keeps Geu-ru up at night. Sang-gu must make a loan payment by putting up either cash or his fists.
A suit store owner reveals a mother's longstanding wish. Sang-gu is reminded of his costly promise. The trauma cleaners arrive at a bloody crime scene.