So I was searching for this apocalypse arc of a B QT, where, the MC is some sort of researcher and the ML is the strongest guy out there on whose body the MC performs experiments. The ML is in a coma, but due to certain circumstances his soul gets attached to MC which allows him to follow MC wherever he goes. At first he's resentful, yet later on realises how MC doesn't tend to his own body much and even forgets to eat during his research. So, ML comes to realise that for the sake of humanity, MC is intending to sacrifice his own body. After using his own spiritual energy (or mental strength crystal) for saving the ML from self destructing, MC works to the point of vomiting his own organs. MC gets killed after his research is a success by an ice user for spreading the formula for anti virus to the world. And then the MC and ML are reborn back in time. In the end after MC yet again succeeds in developing an antivirus, ML is about to confess but MC extricates his soul from the body whilst believing that his lover isn't in that world. MC dies in ML's arms and ML too dies during a mission 10 years later by self destructing. Prior to that, ML had been carrying MC's body with him after his death in a coffin, and it remains intact even after explosion.
Rebirth of MC and a lot more but can’t think of names so I’ll be looking for them! Earth is Online is also apocalypse but no zombies Don’t pick up boyfriends from the trash bin and Heroic Death System are both QT with zombie apocalypse arc like FOD Little Mushroom
Boss’s Death Guide Little Mushroom My Cherry Will Explode in the Apocalypse End of World’s Businessman Dangerous Survival in the Apocalypse Number One Zombie Wife Lord of End of World (Harem) The Reborn Otaku’s Code of Practice for the Apocalypse Rebirth of MC Back to the Apocalypse Thrive in Catastrophe The Earth is Online
oops, didn’t see that you’d already recommended some! Can’t believe I forgot number one zombie wife, I’m literally reading that one right now!
Actually, my brain was connecting the dots to FOD, but I wasn't confident with my guess, so thought, "Why not, just post this and ask for more such BLs along the way?"
I thinks that BL QT, with the missing L. Probably typo. Edit: in a single glance it made it looked like a BBQ.