This really remind me a few years ago we once had a black and a yellow-brown cat too. They're males and same size as well. One day when i heared some noises in my house and then i go check and saw the black is on top the yellow-brown. I kind of like " whuuu sorry bros " and just go back to my room.
And i just f*** realized that they're brothers (really blood relate no jokes). I cant sleep that night(⊙…⊙ )
Kangin and Ingyu part has been so sexy that enough to drool but im tired