C595 Missing(last Part)

Ji Kexin looked at her mother's anxious expression and did not seem to be joking. She seriously asked: "How could my brother not see him? When did this happen?"

Ji Kexin's mother said, "I don't know. When I went to deliver breakfast to him this morning, I found that the door to your brother's room was open. When I opened it, there was no one inside