This takes place around the same time as the Durarara but after the main plot... I'm guessing it is an AU... Kaya Ryugamine, adopted sister of Mikado Ryugamine moves to Ikebukuro due to her job as Shinra Kishitani's assistant, and to start a new chapter in her life. However, after an interesting meeting with Stronge...
An incredibly ordinary life filled with extraordinary events thanks to a particular Shizuo Heiwajima. Shizuo x Reader, always (+ some Izaya action on the side). Cover is official Durarara!! artwork (edited by me).
You recently moved to Ikebukuro, you immediately develop a crush on Shizuo Heiwajima, the strongest man in Ikebukuro. Soon after a new Gang comes in and threatens Ikebukuro's 'normal' life. Some of Y/N's memorys also return to surprise everyone. You'll have to read for more!
Moving from Kanagawa, Aya starts her new life in Ikebukuro, Tokyo with her brother. Now living in a completely diferent place, she will have to adjust to her new surroundings.