OiFuta (Oikawa x Futakuchi)
-peace signs in every picture
-salon days
-they would eat out a lot because neither can cook
-i stg Oikawa has a teddy bear obsession (fite me) so every birthday Futakuchi gets him a new one (just think of it like Suzume-san and Usami from Junjou Romantica)

LevHina (Lev x Hinata)
-Lev lifting up Hinata when he can't see something
-Hinata insisting on riding the smaller rides since he's not tall enough for the biggest ones
-awkward "who's gonna pay" moments
-all the tippy toe hugs

KuroDai (Kuroo x Daichi)
-train rides while Skyping since they can't wait to see each other again
-Kuroo always begging for phone sex (oops)
-ice cream parlors all the time
-just laying in the grass on a hill talking and catching up