If you have a big mouth but a good heart, people will recognize your kindness. Even if you blabber on with your big mouth, as long as everyone knows that your heart is filled with kindness, they will love and accept you.
To further show your kindness, you chop up some onions (おん) for a friend who always cries when they chop onions. The onions make you cry too, so it’s a nice act of kindness that you’re toughing it out for your pal.
Currently there are no similar looking kanji which exist in the WaniKani learning system