We have the winter radical and the two radical (though it's sort of slanted). What's two times the winter radical, if radicals are just a part of a kanji? Two times would be enough to create the entire kanji, which is also winter.
Winter is the time of year you give out presents: "one fo' you, one fo'you. And... not you, this one's not fo' you so fu’ you! (ふゆ)!
Currently there are no similar looking kanji which exist in the WaniKani learning system