JJK HEADCANONS
I believe haibara was straight, like VERY straight. Yet nanami still loved him and wanted to confess, before he could haibara died. soon after geto left, gojo and nanami both alone and scared with this new found emptiness turned eachother for support, even if they did not love eachother the way they loved their deceased and missing ones they love eachother and sought comfort in eachothers arms til the end.
When gojo and geto finished missions, they always went to get food mostly high pallet things such as sweet or spicy food. gojo did not like spicy food yet always tried it, when his tongue singed from the heat geto would always eat it for him, he still does it now. Almost like a tradition to honor the one he loved, yet whenever he eats something spicy he looks for his best friend to finish it forgetting he is no longer there.
nanami is also a big foodie, i imagine gojo brought him on a couple food excursions after missions too. They both would just eat in silence, nanamis favorite food is bread, a bland yet delicious food. when satoru singed his tongue with the heat, he still had no one to give it to yet nanami would always try it before they decided to throw it away.
follow up to that one, when gojo realized nanami died after the prison realm he once again realized he was truly alone. that no one would ever do that with him again.
ok decent one I believe geto is half chinese and half japanese, his mother is chinese and he spoke it at home to her. 😊😊