This was fulfilling a request from a while back @GUITAR
Original post here: https://community.gametabs.net/t/kuzu-no-honkai-heikousen/748
The ending theme is titled "Parallel Line" (平行線, "Heikousen") and sung by Sayuri.
The exact version of this transcription and arrangement is based on the third track of this CD:
http://vgmdb.net/album/64672 (平行線 -アニメ「クズの本懐」ED ver.)
The track they released a while back was slightly different than the anime ED so I waited a bit to get the CD that had this version.
In the download section, there is also the lead sheet for those interested in singing/playing along with the original. Skip to section B (measure 19) for the "actual" ED found on youtube, however I included the introduction to the song as well.
Youtube (starts at measure 19, B):
クズの本懐 ED (Kuzo no Honkai ED) .gp5 (17.6 KB)
Scum's Wish.zip (205.0 KB)
For some reason it wont let me put the gp5 file in the zip? Anyways, i think everything is there.