しょ, しょう, そ
If you want to wear a top hat you also have to wear a suit to go with it. You can't just wear a top hat, that just doesn't look right. When you think top hat, think about what you also need with it.
You have a top hat and all the clothes that go with it but you also need a nice car (か) too! You can't just get all dressed up and then have no way to get anywhere to show it off.
Currently there are no similar looking kanji which exist in the WaniKani learning system