Seafood - End and The Alternative Karma Consequences
&quot;Monks, these four types of kamma have been directly realized, verified, &amp; made known by me. Which four? There is kamma that is dark with dark result. There is kamma that is bright with bright result. There is kamma that is dark &amp; bright with dark &amp; bright result. There is kamma that is neither dark nor bright with neither dark nor bright result, leading to the ending of kamma.
https://www.accesstoinsight.org/tipitaka/an/an04/an04.235.than.html
Considering the above Sutta, It appears this person has done both dark and bright kamma. The only way he will be totally free from his bad Kamma is when he became an Arahant and after Parinibbana. He should at least attempt to be a Sotapanna, which will free him from rebirth in a woeful state.