There is a plate on the dirt with a gun on it. You decide to put it in your mouth, but it's very bland, so you add some salt. Salt will make anything tastier.
As you salt this strange choice in food you mutter, "She owes (しお) me for this," out loud to yourself. Who is she, you ask? The lady that put this salt-less food gun down in front of you before running away.
Currently there are no similar looking kanji which exist in the WaniKani learning system