Durarara!!

Celty retrieves a package from a man. She is attacked by a shadowy slasher and her helmet is sliced off. The man runs away and the slasher chases him. Celty's wounds whisper that she is a monster, saddening her. The events of Seiji's sudden leave and Anri's first appearance are reviewed. A teacher named Takashi Nasujima tries to molest Anri, but Masaomi prevents him from doing so. Mikado and Masaomi warn her to stay away from Nasujima. Anri tells them about Mika and her association with Seiji. Mika was previously using Anri to make herself look better. However, Mika disappeared shortly before school began due to being heartbroken, taking a vacation to relieve her grief, which is possibly referring to how Seiji rejected Mika because she stalked him. Mikado and Masaomi believe that the police should handle her disappearance. As Masaomi walks home, he tells himself that he must keep Mikado away from the dark side of the district because Masaomi himself has already been there, and he also notes that he gained courage since Mikado came to Ikebukuro. Rumors are being spread regarding how the Yellow Scarves defeated the Blue Squares. Mikado sees Seiji and the redheaded girl, but he realizes their elopement. Meanwhile, Masaomi tries to rescue Mikado after believing Mikado was being chased. Unfortunately, Masaomi becomes cornered by the Yellow Scarves. Mikado finds the Yellow Scarves threatening Masaomi and tries to stop them, but he gets cornered as well. Celty concurrently retrieves the package from a man, and is attacked by a shadowy slasher. The man runs past the gang and the shadowy slasher attacks them instead, allowing Mikado and Masaomi to escape. Izaya visits a pale girl in a hospital, telling him of how she spots Masaomi outside the window from a distance. The pale girl's cell phone displays a picture of Masaomi and her together. Masaomi later accepts being in a love triangle with Mikado and Anri.