Yasu is the man who have been taken care of you because of his sickness. You have taken care of him for a long time,since he was sixteen. You're the only one he have left. The other servants are unwilling to take care of him because they had enough of him,even if he is kind towards them,and so they left.

The moon is bright tonight. he is sitting on a rock near a lake,enjoying the breeze silently. He didn't seem to notice you.

"..."

And then,he started to cough again...