Actually maybe I could share some mental images I have for those Nagi rarepairs?
Nagito and Peko taking great amusement in playfully teasing Fuyuhiko together. His bodyguard/childhood friend and boyfriend turn out to be quite chipper around each other. And will get into some zany misadventures to protect Fuyuhiko from things that they assume are threats. The end results usually leave Fuyuhiko holding his face in his hands in disbelief. But he just can't hold it against the two. Especially when Nagito pecks him on the cheek.
Nagito never imagined he could enter a loving relationship with an Ultimate. But what surprised him even more...is just how comfortable and at peace he feels with the relative normality Mahiru offers. The simple act of doing household chores together feels gratifying to the both of them. Mahiru loves having a partner she can rely on to pitch in. And for Nagito these moments provide a sense of stability and tranquility. It's a mutually caring relationship where each of them are constantly trying to make sure the other isn't fatigued or overworked. Like Nagito will be all "Mahiru-san doesn't have to do any work today!" on her birthday, which she plays along with for a smile. But she'll step in and assists after a few hours when it's clear he's starting to feel a bit tired. And Mahiru is slowly making progress in selling Nagito on the idea that he is an equal partner.
Nagito actually manages to figure out that Imposter is not who they say they are early on. After carefully observing the animation work of "Ryota Mitarai", and realizing that while the stuff "he" does in class is decent, there's a noticeable quality gap between that and the animation brought in from "his" dorm. As well as discovering from older photos that Ryota Mitarai was supposed to be very skinny less than a year before Hope's Peak. It leads to Nagito confronting Imposter, fearing for the safety of the real Ultimate Animator. Only for Nagito to perk up immediately upon learning that he's discovered a secret Ultimate with an incredible talent. He agrees to keep it a secret to a grateful Imposter (who was relieved the confrontation came from a place of concern for Ryota). And that leads to the beginnings of a close relationship, with Nagito eagerly agreeing to help Imposter with their "Nagito Komaeda" impersonation. Which is quite good, although Imposter can't convincingly replicate Nagito's bizarre luck. Which they actually use to make a "See, there is something quite special about you" point to a protesting Nagito.
ASJFYJSJW these are so cute AHHH, I love all of them, the Komazumi is so adorable, the Twokoma is chef's kiss and I love the Kuzukoma one too!! WHY ARE YOU AMAZING AT THIS ANON YOU KNOW WHAT, A good idea deserves some sketches!! 💕💕 Also I tried to draw the others but I got a lil lazy.. but to make up for them I drew something at the end
