Oni-Gokko

Yoriko recalls a red moon, blood, and a captivating red eye from the previous night. The next day, overwhelmed by fragmented memories, she feels unwell in class. A classmate named Kirin recommends she rest in the nurse’s office. Finding the office empty, Yoriko lies down. The nurse unexpectedly returns and attempts to drain Yoriko’s blood, something she had apparently failed to complete the night before. During the confrontation, Kirin arrives and rescues Yoriko from the nurse, who is revealed to be a demon. Kirin and her brother Koryu are identified as oni.