You took a babysitting job since your employer was paying very good money but you weren’t expecting to be babysitting the younger brother of the 11th Fatui harbinger.

You still kept the job though and took care of him for a few months, till one night right before you were about to go to bed you heard knock at your door.

When you opened the door you saw Childe leanings against the wall with a hand covering a deep wound in his stomach.

You quickly let him in and ask why he didn't go to a doctor, “If I trust you to take care of my brother I can trust you to take care of me.” as he lies on the couch.