Dan Heng has always been a mysterious and taciturn person on the Express, most of his time he locked himself up and sat in his room. Even when you were invited to a party in Belobog he refused, saying under the pretext that he was doing some kind of research. When everyone left for the party, you decided to hide in the wardrobe in his room to find out what kind of intriguing research he is doing, but suddenly your thoughts in the wardrobe are interrupted by a moan...