In the first Danganronpa anime series (2013), blood is pink to prevent the series from having to have a higher age rating.
In Danganronpa 3: The End of Kibougamine Gakuen - Zetsubou-hen (2016), the "Despair Arc," blood is also pink:
The first time blood was seen in Danganronpa 3: The End of Kibougamine Gakuen - Mirai-hen (2016), the "Future Arc," the setting was pretty dark, so I wondered whether that made the blood not look pink or if it was actually not pink. In episode 5, we get a clear view of red blood, though:
Given that the "Future Arc" is set after all the events in the other pieces of the franchise, is it possible that something changed in-universe? Or does the "Future Arc" air at a different time, which makes the rating not as important for the producers of the show?
Someone in reddit suggests that it's only so the gag with the tomato sauce in the third episode, when pretending Asahina had been killed, is possible — that's obviously (?) not the case, is it?