Japanese by Example
Learning through examples in manga

Feeling better with 気が済む

気持(きも)ちがおさまる。また、満足(まんぞく)する。(こころ)()()く。

Feelings settle down. To be content again. The mind calms down.

Goo Dictionary

The expression ()() translates to “to feel satisfied” or “to be at peace (mentally)”. It conveys a sense of mental or emotional relief after resolving a concern, achieving a goal, or completing a task. One’s 気 (mood, feelings) does the action 済む (to feel at ease).

Further reading

Examples

アオハライド » Volume 1 » Page 88