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respectfully disagreeing. yes, siwon is loyal and kind but his firm beliefs, dedication to do what is right, and need to challenge himself define him more. loyalty is an aspect of who he is but not his biggest characteristic (unlike cedric diggory, whose defining trait was that) https://twitter.com/kyuhae0/status/1291251058908393474
lol sorry. i just strongly believe siwon is a gryffindor. 
