It turns out that the caretakers were one of my adoptive children's biological parents that were manifested by Dazai.
"M-Mom, Dad, is that really you?" Ranpo asked.
"Yes, it's really us." His parents said.
Now here's the backstory of Junichiro and Naomi.
Julie and Naomi's mother were friends back in high school, and one of them got unexpectedly pregnant one day.
"Julie, you need to get an abortion." Yami said.
"No I don't, I'm keeping the baby." Julie replied.
After Julie had Junichiro, Yami got pregnant.
The two babies were taken care of their grandparents while the mother's went to school.
Suddenly, their was a school shooting. Julie and Yami took their babies and shipped them off to the orphanage without saying goodbye.
THE END
