To Kill a Thief/WMG
Miyako spared Light as an act of Cruel Mercy.
In the end, she discovered he wants her to kill him so that she'll be like him. Instead of giving him what he wanted, she decides not to.
- Confirmed.
Miyako will become Light's Morality Pet.
- Jossed. Light will kill her off as soon as she finishes Jeanne off.