枯れない花 (karenai hana) / 下川みくに
作詞：小林夏海 / 作曲：ab:fly
フルメタル・パニック! (Full Metal Panic!) ED
Transcribed and arranged for voice, piano (and drums) by Sperion.
Score in pdf and midi can be found at http://sperion.web.fc2.com/
Background sketch of Bonta-kun by Sperion.