Das Opening ist Kick Back, aber jede Episode hat ein eigenes Ending. Da kommt es drauf an, welche genau du meinst:
"CHAINSAW BLOOD" by Vaundy (eps 1)
"残機" by ZUTTOMAYO (eps 2)
"刃渡り2億センチ" by マキシマム ザ ホルモン (eps 3)
"錠剤" by TOOBOE (eps 4)
"インザバックルーム" by Syudou (eps 5)
"大脳的なランデブー" by Kanaria (eps 6)
"ちゅ、多様性。" by ano (eps 7)
"first death" by TK from 凛として時雨 (eps 8)
"Deep down" by Aimer (eps 9)
"DOGLAND" by PEOPLE 1 (eps 10)
"バイオレンス" by QUEEN BEE (eps 11)
"ファイトソング" by Eve (eps 12)
https://myanimelist.net/anime/44511/Chainsaw_Man?q=chainsaw%20man&cat=anime