If someone is coming toward you in a car, holding a weapon in their hand, they're going to attack you!
Right before the attack begins, you recognize the hand holding this weapon and driving this car. It's Gecki (げき), your long-lost gecko who you may or may not have let fly off into a really fierce tsunami. Oops. I think he may be here attacking you out of revenge.
Currently there are no similar looking kanji which exist in the WaniKani learning system