The door leading to the moon can be broken down with one’s shoulder. It’s not a very sturdy door to the moon, so it’s quite easy to drop your shoulder and ram it open.
"Wow, your shoulder is just like my catapult (かた)!" you hear someone shout. As you turn you're just in time to see a man catapulting through his own moon door!
Currently there are no similar looking kanji which exist in the WaniKani learning system