"jiyuu no tsubasa - shingeki no kyojin op2 - [piano duet with tehishter]" "jiyuu no tsubasa - shingeki no kyojin op2 - [piano duet with tehishter]" official video "jiyuu no tsubasa - shingeki no kyojin op2 - [piano duet with tehishter]" live "jiyuu no tsubasa - shingeki no kyojin op2 - [piano duet with tehishter]" cover Sayonara no Koto official video Sayonara no Koto live Sayonara no Koto cover Sayonara no Koto feat