So i have two apocalyptic BL that I've read (decided to let them cook but forgot the title instead). I only remember a bit about the beginning of the two novels. 1. Not sure if ML or MC reincarnated (i think they're already established though). ML went back to his gang or clan to clear out something, but an earthquake happened. The apocalypse started with ML and MC away from each other. 2. ML and MC hoarded rice, they also prepared rice using the spring water and it kinda gave a refreshing vibe? So while they were hoarding, others also started hoarding so they got a lil bit of problem from that. I'm not entirely sure if its the same novel or not, or if it's an arc from a QT (most probably not). Both are zombie novels i think with awakened people, both have space user MC i think. Or you guys can recc me some good zombie, alien or monster novels I need more to read
Nr. 1 seems like the BL from this post. To be sure: It's solution is Rebirth of the Chaotic Space in the Last Days I hope this is the one you're looking for. For other recommendations you could check out this post. Perhaps you'll find some novels you don't know there.
Back to the Apocalypse seems to be the no.1 but could be very well wrong. It has the same plot of Separated at the start of the apocalypse though. ML with his Gang while MC was happen to be alone even though they had plan together. I don't know anything about no.2