You have to say what you’re selling because people don’t like to read. If they walk right by and don’t read, you better say what you have for sale so they’ll know! Read it out loud to them.
What are you forced to read aloud to sell? Yo-yo (よ) instructions! You’d think they’d be self explanatory, but there are actually a lot of rules and tricks that you have to read to get good at yo-yoing. Read all of these out loud so you can sell them.
Currently there are no similar looking kanji which exist in the WaniKani learning system