Mama-san left the door cracked for Cha-san to see if he can explore the house during night time.
She took a chance but she heard Cha-san howling.
She came to check on him, and found him staring at curtains.
She thought Cha-san pushed Mochi outside.
However, she was on the other side of the curtains. She was hiding and could not move from there.
Mama-san helped Mochi comes out from curtains.
She held her, and looked at Cha-san together.
He started to mark his sent on the cat couch for a while.
Mochi harrumphed and left to somewhere..
Cha-san then went back to his room and slept again.
He is expanding his territory for sure.
Since then, Mochi is still hiding under the bed of mama-san..