This is how I divided the lyrics from SPICA's Painkiller for the members of Stargazer. I think it's a relatively good division even though it was a little hard to pick which member was going to do what. Obviously, in the real song there isn't really a specific rap part like I created here so just imagine it being rapped instead of sung, okay? Haha.

Hyunjae–Sanga –Hyejin –Qiao – Min- Rinrin

Oou~
Oh~
Listen

Oneuldo naneun jameul motja
Chimdaee nuwotda
Dwicheog idaga ireona
You know me, Yeah you know me
 Ajig neoreul itji motae uldaga
Utda
Tteonagan neol geurimyeo~Oh~

Hogsi neol bomyeon naeulkka bwa
Seorab gipsughi
Gamchwodun neoreul kkeonaebwa~
You know me, Yeah you know me
Neoneun nawan dalli haengbokan geoya
Mudda
Gaseumi jeoryeowa~

Neomu mibdagado neo neomu bogo sipeo neo
It’s unbelievable
Jichin mami mareul hae neo hanaramyeon dwae Woah~o~Woah
It’s unbelievable
(Pain) Killer, Killer, Killer
(Pain) Killer, Killer, Killer
(Pain) Killer, Killer, Killer
(Pain) Killer

Banbogdoen nare muneojyeoga
Najocha geobi na
Ibyeori ireon geonga bwa
You know me, Yeah you know me
Neomu dachyeo meongdeun mami apa wa
Ulda
Dasi neol chatneun na~

Jeongmal nan
Neomu duryeowo wa
Yeongwonhi neo hana
Gieogman hada salkka bwa
You know me, Yeah you know me
Neomu gipi ppajyeo ijeul su eobseo
Ulda
Jeom jeom deo michyeoga

Neomu mibdagado neo neomu bogo sipeo neo
It’s unbelievable
Jichin mami mareul hae neo hanaramyeon dwae Woah~o~Woah
It’s unbelievable
(Pain) Killer, Killer, Killer
(Pain) Killer, Killer, Killer
(Pain) Killer, Killer, Killer
(Pain) Killer

Jiuryeo ijeuryeo aereul sseo bojiman
Neowa na gajin sigandeuri
Naegen modu da sojung haeseo
Very special
Very special

Da nohaboryeo haebwado
Tto daranaryeo haebwado
Naneun neocheoreom halsu gaeobseo
Nan aereul sseodo noheul su eobseo~

Neomu mibdagado neo neomu bogo sipeo neo
It’s unbelievable  (Piryohae~)
Jichin mami mareul hae neo hanaramyeon dwae Woah~o~Woah (Oh baby)
It’s unbelievable (Oh. Hey)
(Pain) Killer, Killer, Killer (Nega piryohae)
(Pain) Killer, Killer, Killer (Nega piryohae)
(Pain) Killer, Killer, Killer (Oh baby)
(Pain) Killer (Ou~WoahWoah)