Hi, I found [this site called kaku-navi](https://kaku-navi.com/idiom/kanyoku.html) that teaches you idioms by using short stories in the form of a manga page. It’s all in japanese, with furigana.
[Here’s an example page](https://kaku-navi.com/idiom/idiom01597.html) teaching the use and meaning of 「気が済む」
I didn’t see it mentioned before on this subreddit, but I may be wrong, so I’m sorry if it’s a known resource