進撃の巨人 OP 紅蓮の弓矢 Linked Horizon [ピアノ] Shingeki no Kyojin OP Guren no Yumiya Linked Horizon Attack on Titan [piano] Cover by pan piano The arrangement created by Porqui -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - My Blog(中文) http://panpiano.c