Are you alright ??
Yeah right. The first thing that will come in mind while dying would be 'lets hurry and have as much sex as possible before dying' because if we use this time to save ourselves instead than we might be able to have sex as much as possible, that is not what we want now do we.
alright, i'm back after walking around back and forth to recall which ones are it among those that i've read (no, seriously i actually did it while sipping coffee on the side)
also, before i give the links, i don't know how much you can take but themes like that are definitely terrible.
they had sex, sex, sex till the poison kill them. - http://www.mangago.zone/read-manga/grand_guignol/ just ignore that "chapter 3" i didn't know why mangago had to mess the chapters up.
they had sex in front of the mc as he dies @ch.1 http://www.mangago.zone/read-manga/bannin/
http://www.mangago.zone/read-manga/mizu_no_ue_no_tsuki/ drunken sex, didn't realized that the uke died while he's raping him
oh, i suddenly remembered. you should read sadahiro mika. she had characters that are kind of into that thing.
and this, sex before he cut the uke's arms off, and there's an episode of the neglect play thing. uke was practically left to die and their makeup sex is extra intense lol.
http://www.mangago.zone/read-manga/venus_ni_seppun/
Yaoi manga with the guys having sex will being burned alive? Or while they're deep underwater and holding breath?? Or something like they're having sex in life and death situation??