ばつ, はつ, はい
Touch your fingers to your friend to extract their friendship. Extract it with a high five. Extract it with a back rub. Extract it with an, "Oh no, there's some lint on your shirt, let me get that for you."
Your friend looks you in the eye and says, I want you to extract my clothes. I want to be nude (ぬ). Now you have to use your fingers on your friend to extract their clothes to help them be nude.
Currently there are no similar looking kanji which exist in the WaniKani learning system