Reason [4]

"W-what are you d-cough doing?"

Just when Eth thought that Susan wouldn't do any harm to him she grabbed him by the neck.

He tried to remove her hand, but he was too weak to do anything against the monster called Susan.

A few seconds later, Susan smug and satisfied with her performance released him. She left the corridor and sat on the couch in the living room.

"Tea."

"What?"

"I'll take tea."

Eth, still unsure of what just happened, dumbly proceeded to the kitchen.

"What does she want?"

As far as he knew there was never any kind of contact with Susan from his side.

He tried to think of any reason that will make Susan come to his room to no avail. 

Ultimately he decided to talk to Susan.

"..I don't remember how to make tea."

He had asked Susan out of politeness. But he had forgotten that he had no memories for the past 10 years.

"Should I go back like this?"