감성 [pronounced gamsung] is sentiment/emotion (side note: people often make fun of those super-sentimental, somewhat-cringey instagram posts by calling them “insta gamsung/gaemsung.”)
do you know gamsung text..? [do you know sentimental text..?]

i knew this thread would come in handy!!! (성 can mean star or castle)
https://twitter.com/doolsetbangtan/status/985267084790849536?s=21 https://twitter.com/doolsetbangtan/status/985267084790849536
https://twitter.com/doolsetbangtan/status/985267084790849536?s=21 https://twitter.com/doolsetbangtan/status/985267084790849536