https://www.youtube.com/watch?v=uwpNYitHHqQ
Shownu | Wonho | Minhyuk | Kihyun | Hyungwon | Jooheon | I.M
la la la la la la la la la, la la la la la la la la la
meonjiman deopeojin geoul soge boineun na
eonjenga jinagaramyeo sueopsi kkoineun nal deureul
bujeonghamyeo jabi eopsi kkeobeorin bamgwa hamkke
bul kkeojin bangan ibullo deopeobeorin na
uriga gieok haeseotdeon georil da
ssak ijeobeorilkka but imi huhoega dwae beoryeojin mam
dasi neol jabajugin himdeulkka yeojeonhi haneul wie boyeojyeo
ne eolgureun like sae paraejin dal
eoduwojyeo beoryeotdeon neoui pyojeong
areungeorine eojeui neoga haetdeon pyohyeon
Don’t wanna say goodbye, don’t wanna say goodbye
insareul geonnego gadeon dwinmoseubi nune boyeo
gwaenchana haetdeon saenggage mami an noyeo
Don’t wanna say goodbye, don’t wanna say goodbye
I’m fine thank you and you, just asking, this might be the last conversation of you
Long time movie’s overdue have to say bye sign que
naebaenneun hansum malhaeya doel geo gata
Have to say the truth baby, my lover
You’re gonna be the past perfect, I’m sick and tired of this bullshit
tteugeopge saranghaeseo urin ne nunmullo kkeojyeobeoril sarangiran bulssi
Let’s get blind this sec, I’m sorry babe (sorry)
eoryeowojyeo beoryeotdeon neoui maldo
ijeya ihae gane heulleogabeorin sigando
Don’t wanna say goodbye, don’t wanna say goodbye
amu maldo eopsi meori wi biga naeryeotdeon
naldo nun ape keomkeomhage eoduwotdeon bamdo
Don’t wanna say goodbye, don’t wanna say goodbye
La la la la la la la la la (You understand, right?)
La la la la la la la la la (Everybody sing it together)
La la la la la la la la la, la la la la la la la la la
(Sorry, don’t wanna hurt you girl)
eoduwojyeo beoryeotdeon neoui pyojeong
areungeorine eojeui neoga haetdeon pyohyeon
Don’t wanna say goodbye, don’t wanna say goodbye
insareul geonnego gadeon dwinmoseubi nune boyeo
gwaenchana haetdeon saenggage mami an noyeo
Don’t wanna say goodbye, don’t wanna say goodbye
geurae Don’t wanna say goodbye
eodi ganda haedo jeoldae neon mot ga
nuguboda himi deungeol naega wae molla
yaegijocha motaetdeon naega miwojineun bam
geurae Don’t wanna say goodbye
eodi ganda haedo jeoldae neon mot ga
nuguboda himi deungeol naega wae molla
yaegijocha motaetdeon naega miwojineun bam
Tonight, your face is like a blue moon
Color Coded Heaven 
for minhyuk part after I.M rap in this lyric
eoryeowojyeo beoryeotdeon neoui maldo
ijeya ihae gane heulleogabeorin sigando
Don’t wanna say goodbye, don’t wanna say goodbye
I think that’s Hyungwon parts.
Because the voice is Hyungwon (i think)
You are absolutely right, that is indeed Hyungwon’s voice there rather than Minhyuk!
I put it as Minhyuk because I noticed he has a slight lisp (well it sounds like a lisp would sound) when he sings and that’s what I was hearing. I didn’t realize Hyungwon has the same thing. I compared the “don’t wanna say goodbye” parts between the part in question and Hyungwon’s part in the next chorus and it was the same voice.
Thank you for pointing that out!