おご, にご, よな
If the tsunami that's heading for your village is fat you should try to select a different one to hit instead. You don't want to select fat tsunamis because they do more damage.
If you're having trouble selecting which one is the least fat just check to see which tsunamis are eating tacos (た). Only fat tsunamis will be eating them, so just look for one without a taco.
Currently there are no similar looking kanji which exist in the WaniKani learning system