Yuki is sick because of many measures in hospital....and for the most account, Shuichi is to blame. They tell him to separate from Shuichi for a while, and when Shuichi here's this. He's traumatized. Shuichi goes to see Yuki in hospital at night and speaks to him why he is sleeping, little does he know that Yuki is actually listening, and eventually finds out. (thetvdb.com)