戻りなさい

when my hub and I were playing with my son in the living room, I remembered that I need to do something and tried to leave the room, unexpectedly, my son said'戻りなさい’='come back', I was surprise, and I stay back! I never say that before!!! he must has been told by sensei at hoikuen!!!! since his little bb sister was born, he needs to share his dad and mom with bb, even he loves his little sister, he is just a 4 year old and needs attention too!! we are trying our best not to make him feel alone!! 頑張ります！！！