Serpent.

Serpen, is the main antagonist of the manga Bibliomania, The manga presents Serpent as the owner of a "mansion" that hosts "guests", actually a book that consists of the thoughts and dreams of those he catches, creating a designated page for each, which encapsulates their deepest dreams and desires. Serpent: - FULL NAME: Serpent. - ALIAS: Book of Thought and Dream. - OCCUPATION: Cosmic Entity. - HOBBY: Destroy, eat, or dominate everyone. - CRIMES: Genocide, unlawful imprisonment. - TYPE OF VILLAIN: Genocidal Multi-Being. - Serpen, is the main antagonist of the manga Bibliomania, The manga presents Serpent as the owner of a "mansion" that hosts "guests", actually a book that consists of the thoughts and dreams of those he catches, creating a designated page for each, which encapsulates their deepest dreams and desires. - Background: A carefree young woman named Alice wakes up to find herself in room 431 of a mysterious mansion. There, she is greeted by Serpent, the head of the mansion, who proceeds to tell Alice that while she is in her room, all the wishes and longings she had would be granted instantly and that she also has to be given there for "THE PARTY". But there is one condition that must be obeyed: you must not leave the room under any circumstances, because if you did, your body would begin to rot, and the farther you go from your room, the more it will rot, until you finally die. However, Alice is unfazed by this, so she begins a long journey to get to Room 000 and leave the mansion to go to the outside world, although the story starts out fairly simple, it is revealed over the course of the comic that Alice is not all she seems on the surface. In fact, she is an even more dangerous "Eldritch Being" than the snake itself