Ore no Imouto ga Konnani Kawaii Wake ga Nai x Toaru Majutsu no Index Movie: Endymion no Kiseki - Kokuchi Eizou
俺の妹がこんなに可愛いわけがない。 ／ 『劇場版 とある魔術の禁書目録 -エンデュミオンの奇蹟-』告知映像Ore no Imouto ga Konnani Kawaii Wake ga Nai x Toaru Majutsu no Index Movie: Endymion no Kiseki - Kokuchi Eizou
The story
specialA special video shown at screenings of Toaru Majutsu no Index Movie: Endymion no Kiseki to promote the then upcoming second seasons of Ore no Imouto ga Konnani Kawaii Wake ga Nai and Toaru Kagaku no Railgun.