What's your favorite anime opening song? Um... Has to be a opening to a anime?...

Sword Art Online all seasons

Again from FMA: Brotherhood
Everyone apart of that is amazing

pokemon and sailor moon

Sakura Kiss of High School Host Club
"Kiss Kiss fall in love~" :3

The Akame ga Kill one

Enamel from Black Butler - Book of Circus
Flyers from Death Parade
Kibou ni Tsuite from AKB0048
The HERO! from One Punch Man
X.U. from Owari no Seraph / Seraph of the End

The opening to Shingeki no Kyojin. I think it's called "Guren no Yumiya".

..the attack on Titan one.... Beats all... I forget name XD