Random (mostly shippy) SMTV headcanons
I love the idea of Aoshu and Koshiyuzu parallels, if Aoshu colours are red and deep blue, Koshiyuzu are gray and light blue. Aoshu pda vs Koshiyuzu yearning until they break.
Koshimizu envious over Aoshu being whole together was the thing that made him finally tell Yuzuru about who he was and possibility of them being nahobino.
Yuzuru tries to act like he doesn't like sweets to appear more adult/"manly" but he doesn't have a problem with expensive traditional japanese sweets he finds on his work desk when he does well in a Bethel mission.
I'm thinking like a sugared peach in the black box with a golden ribbon for some reason too. With お疲れ note.
Yuzuru likes his coffee sweet with cream, Koshimizu likes black and bitter coffee.
Yuzuru stumbled on Bethel half by accident while stalking investigating fanboying stuff about the prime minister. Later he's afraid to ask did Koshimizu let it all to be found by him, he doesn't want to know.
Yuzuru: "Khonshu's such a creep, an immortal god liking a highschooler!" <-Says while almost sitting on Koshimizu's lap, completely oblivious to double standard.
Aogami's warmer than humans and dorms are poorly heated, so it only makes sense he rests next to V-kun to keep him warm while he sleeps.
V-kun holding Aogami's hand and walking him quietly to the other side of demon haunt when there's Kushinada-hime in the party. Just in case.
Neither couple are very physical with their love ie. kissing or more is rare. But happens on occasion.