Shiki (ED1) - "Walk no Yakusoku" by nangi

This is the first ending theme song of Shiki entitled,「walkの約束」 (Walk no Yakusoku; Promise of the Walk) sang by nangi.

Download - Lyrics - Subs by Taka

Really a sad song though I don't particularly like to listen songs like this since it makes me sleepy esp. since I watch this show at night, but still, it never regrets me. It has a fine tune, and sometimes, it keeps on ringing in my ears.