I hope this helped. Haha. Start from the bottom then up. I did this by ear only. I'm 100% sure with the rapper line's parts. I think jungkook and jimin's parts are sang interchangeably, but I think jimin is doing more of the second voice part because of his high tone. I think jungkook is also doing second voices for V and jin's parts. Tbh, I think the vocals sing together, one voice just stands out. I really hope I helped :)))

[Rapmonster] Niga dareseo animyeon byeoreseo
Watda haedo nan sanggwaneobseo
Neon nawa gateun geol
Neon meotjin yeojaya
Nado kkwae meotjin namjaya
Saranghal subakke eomneun geojanha
Yeah i’m fallin in love

[I think it's Jin again] Neo eodieseo wanneunji
Ni ireum al su inneunji
Nan neomunado gunggeumhae
Na jeongmal neomu gunggeumhae

[V] Neo eodieseo wanneunji
Ni ireum al su inneunji
Oh nan neomunado gunggeumhae
Na jeongmal neomu gunggeumhae

[Jungkook w/ Jimin] Naneun busaneseo neoneun gwangjueseo
[Pretty sure it's solely Jimin] Watjiman ttokgata uri
[Jungkook & Jimin] Yeogi seouredo jeogi jejudoedo
Da sarangeul hajanha oh yeah

<end>

uga] Goma jjom tinggira, gungdireul juchappugi jeone
Jjangnage haji mara jjom nae mam bakkugi jeone
Jeomman geunyang eollada ni geumma ttaemae ikana?
Nae nattugo geotta jotakanikka nae an sseungnana
Gaseunaya jangnan ttong ttaerina? Nuni ppitna
Hoseogigateun meoseumaneun cheonji ppikkarida, ssaerippida
A jjom geummaneun jippi moreunda
Nae mam, da ije da ni kkida nan nippi moreunda

[J-Hope] Ome ome i gasina nahante haneun jit boso
Jigeum nahante haneun jitdeuri simsangchi anheoing, yogoyogo
Neo jakku geureomyeon nan eoltteoltteol simjangi beolbeol
Soni deoldeol sumi keokkeok
Sibang jigeum nal johahae, geosigi geosigihae?
Jigeum ni mameun ontong da, hosigi hosigihae?
Atta geuraedo jeollado namjaga kkeulligin hangapda
A matda, geundi neon eodiseo watdanya?

[V] Neo eodieseo wanneunji
Ni ireum al su inneunji
Nan neomunado gunggeumhae
Na jeongmal neomu gunggeumhae

[Jin] Neo eodieseo wanneunji
Ni ireum al su inneunji
Oh nan neomunado gunggeumhae
Na jeongmal neomu gunggeumhae

<continuation in next comment>

[Suga] Gasinaya nineun eodeseo wanno
Kkarippongssamhane jigeum eodero gano
Nineun myeotsarigo? Niga naeboda nunayaga?
A airakko? Geukam naega ma oppayane
(jaksallane) eolguri jomakdi hae kkarihane
Saradagachi ssaegeurapge saenggigakko jjomae banbanhane
Bap mutna? Kkadaegi chineun geo aida
Keopina hansabari ttaenggilkka? Keopineun gaeanna?

[J-Hope] Yeppeun nun, yeppeun ko, atta geomnage ippeoing
Baraman bogo isseodo geunyang naega da gippeoing
A geundi neon eodiseo watgani ippeujanghage saenggyeogakko
Kyupiteu hwasallo nae mameul kok jjigeoing
Atta, muteun gopda gowa
Neon eoneu namjeongnedeuri bwado heoppeo jilleobeureo, goham
Nuga nakkachaegi jeone eolleun deuridae son bwabeureoyaje
Kwak geunyang naega meonjeo kkaemureobeureoyaje

[I think it's Jin] Neo eodieseo wanneunji
Ni ireum al su inneunji
Nan neomunado gunggeumhae
Na jeongmal neomu gunggeumhae

[V] Neo eodieseo wanneunji
Ni ireum al su inneunji
Oh nan neomunado gunggeumhae
Na jeongmal neomu gunggeumhae

[Jungkook w/ Jimin as second voice] Naneun busaneseo neoneun gwangjueseo
Watjiman ttokgata uri
Yeogi seouredo jeogi jejudoedo
[I think it's just Jimin] Da sarangeul hajanha oh yeah


<continuation in next comment>