The Flowery Lilibeth

(from ebookjapan):
Angel, who lives in a boarding house at the Sandor Institute in the deep forest, has had recurring nightmares since childhood. Terrified of something terrible crawling towards her, she opens her eyes and sees the face of a beautiful girl. She would wake up screaming in pain as she was stabbed in the chest by sharp, sharp fangs. Angel's roommate, Agatha, on the other hand, was a wild girl, sneaking out of the academy at night. She went out to meet her boyfriend, so Angel always left the window open for her. But when morning came, Agatha had not returned. Instead of Agatha, Lilibeth, a girl as beautiful as a flower, appeared on the scene. As if seeing through Angel's attraction to her beauty, Lilibeth invites her into her room. I've missed you so much, Angel. Lilibeth embraces Angel and tries to take her lips with her own, whispering unexpected words. Angel was surprised and ran back to her room, but Agatha, who had disappeared, was back there. But something is obviously wrong, and without knowing why, a series of unbelievable events occur. ......

Also included is a short horror manga, "Night of the Ayakashi".