don't know if you guys still need this, but I unlocked it by having Yoshi choose to stay on the Barakai instead of the Razha when Kol asks
I know you've replied to this comment for 2 years but let me just say it.
- Message from developer
The first Razix CG requires you to have oral in Chapter 5 and then sex with Razix in Chapter 6, but also you need to tell him you love him in Chapter 7 ... and then he'll ask if you want to top him, which will lead to the first C