So it's some kinda fakeout? I feel like even if he doesn't act on it/ 'make a move', just having the feeling is enough for it to count as a tag in other stories unless he realizes it was just an overprotective feeling and ends up with the FMC in the end
ppl really need to google search the terms first before saying something. Incest is literally having sexual relations to any blood relative and so far none of that degree has happened so far smh