Board Thread:Questions and Answers/@comment-32538072-20190811020637/@comment-3214109-20191117014308

Ninja72 wrote: Still makes no sense how he suddenly cares so much about someone that he threatened to kill a few episodes ago.

It was more like he was angry about his plan to get rid of his love for Lloyd failed, not because he felt any love for Harumi. Garmadon never mentioned her again when he reunited with Lloyd, he just focused on the Oni.