For whatever reason child Ignis is in the hands of Niflheim (e.g. captured in Tenebrae) and eventually presents as an omega. Alpha and omegas are pretty rare and he isn't spilling any secrets so he's allowed to be experimented on by scientists so they can get info about A&Os. Including having him bang and mate with an alpha "MT"/clone they managed to create. (Writer can change any specifics, this was just the premise I had, as long as it's underage alpha!Prompto/omega!Ignis being forced to noncon by scientists for research.)
+ mpreg (or at least discussion about how it'll happen at some point) + dehumanisation and lots of scientific description/discussion + comfort between Prompto and Ignis (unhealthy is totally good as long as they're trying to be nice to each other)
Age-wise I was thinking 13/14 but I'm not fussed.
DNWs: -intersex omegas -non-requested ships (abuse by the scientists that counts as sexual abuse is fine as long as it's for science)
FFXV - Prompto/Ignis Underage Noncon ABO
+ mpreg (or at least discussion about how it'll happen at some point)
+ dehumanisation and lots of scientific description/discussion
+ comfort between Prompto and Ignis (unhealthy is totally good as long as they're trying to be nice to each other)
Age-wise I was thinking 13/14 but I'm not fussed.
DNWs:
-intersex omegas
-non-requested ships (abuse by the scientists that counts as sexual abuse is fine as long as it's for science)