[Intro: Heeseung]
Oh
Yeah, yeah

[Verse 1: Jungwon, Sunoo]
Can't believe, nunapui neon (Nunapui neon)
Modeun ge geudaeronde
Nan moreuneun misoreul jitgo isseo (Yeah, yeah)
Simyeon gateun nundongja (Nundongja)
Geu neomeo neoreul chajabwado
Natseoreo, who are you?
Naega saranghaneun neon nugunji

[Pre-Chorus: Ni-ki, Sunghoon]
Hollan sogui mollak
Eojireowo baby
Nan neol aneun geolkka
Mwonga byeonhan geolkka
Jebal daedapae bwa
Naega teullin geolkka?

[Chorus: Heeseung, Jay]
Fatal trouble
It's getting blurry
Neoui gieogi
Muneojyeonaeryeo
Fatal trouble
Neol hyanghan maeumdo
Oraen mideumdo
Da coming undone

[Post-Chorus: Jake, Heeseung]
I don't know you (I don't know you)
Nan muneojyeoga (Nan muneojyeoga)
Hemego isseo (Hemaego isseo)
Neol jikige haejwo
Fatal trouble
Gateun memory
Tto dareun story
Nal heundeureonwa
Fatal trouble

[Verse 2: Ni-ki, Sunoo]
Ah, gyeou jikyeonaen
Neol ilkin sileunde
Burani deuriwo
Jeomjeom yeowin dal gachi
Heuryeojyeo hwaksini
I don't know what to do

[Pre-Chorus: Jungwon, Sunghoon]
Hollan ttawin don't mind
Jipjunghaneun gamgak
Bunmyeong neoneun hana
So now dwiro hae da
Nae simjangi ttwineun
Daero georeoga nan

[Chorus: Jay, Jake]
Fatal trouble (Oh)
It's getting blurry
Neoui gieogi
Muneojyeonaeryeo (Muneojyeonaeryeo)
Fatal trouble
Neol hyanghan maeumdo (Maeumdo)
Oraen mideumdo (Ooh)
Da coming undone

[Post-Chorus: Sunoo, Heeseung]
I know, I know you (I know, I know you)
Ja malhae naege (Malhae naege)
Anirago (Anirago)
Byeonhan geon eopdago
Fatal trouble
Hanaui yeonghon
Mideo nae dabeul
Teulliji ana
Fatal trouble