Toaru Majutsu no Index - 4koma Koushiki Anthology A Certain Scientific Railgun Doujin — Ongoing
- Chapter 1: In de Railgun by Mishima Kurone released Oct 5 '13
- Chapter 2: Suki Suki Daisuki Onee-sama by Dr. Pepperco released Jan 11 '15
- Chapter 3: The One-way Ticket of Next-door Eden by Tatsu Nohana released Mar 9 '15