Date A Live - Sweet Arms Shingeki no Kyojin - Guren no Yumiya Sword Art Online - Crossing Field Naruto - Niwaka Ame Nimo Makezu, Sign Gintama - Pray Bleach - Life, Shoujo S, Alones 11eyes - Arrival of Tears
Sweet ARMS - Date A Live ( Date A Live ) Linked Horizon - Guren no Yumiya ( Shingeki no Kyojin ) ELISA - Ebullient Future ( ef - Tale of Melodies ) fripSide - Only My Railgun ( To Aru Kagaku no Railgun ) Aimi - Link ( Oda Nobuna no Yabou ) Kawada Mami - No Buts! ( To Aru Majutsu no Index ) Kawada Mami - Hishoku no Sora ( Shakugan no Shana ) Kuribayashi Minami - ZERO!! ( Hataraku Maou-sama ) ClariS - Connect ( Puella Magi Madoka Magica ) ClariS - Irony ( OreImo )
Inuyasha (All of the songs) Devil Survivor 2 the Animation (Take your way) Hataraku Maou-sama! (ZERO!!!) Karneval (Henai no Rondo) One Piece (WE GO) Mirai Nikki (Dead END) Hiiro no Kakera (Nee. & Takanaru) Kuroshitsuji OP1 & 2 (Monochrome no Kiss & Shiver) Phi Brain : Kami no Puzzle (Now or Never)
Oh wow, this is actually pretty hard for me to choose.
If I were to choose an OP that I felt fit the anime's theme best, I'd probably go with Shakugan no Shana's 3rd OP (Light my fire) or FullMetal Alchemists Brotherhood's OP Period (Forget which season it showed up. 4th or 3rd maybe?).
If I were to choose one I personally enjoyed, it'd be even more difficult. Probably Madoka Magica's OP or Shiki's. Maybe a tie between the two, even.