(After getting wrecked by iivv, the Gojo-Geto storyline is also completely off the rails.)
Gojo/Geto and Dazai/Chuuya are endgame. No breaking them up or reversing their dynamics. Please check the tags and avoid this if it's not for you.
In the Beast timeline, Black Dazai and Red Chuuya get a drastically rewritten happy ending, while the Gojo clan head and his wife take a sharp turn toward becoming twin tyrants in the original timeline.
Happy-ending-timeline Gray Dazai and Red Chuuya arrive in the Jujutsu Kaisen world during the Hidden Inventory arc and turn the tide, while the twin tyrants from Jujutsu Kaisen travel back to the Dragon Head conflict at age sixteen to help secure a happy ending. (All right, they don't actually turn the tide or help all that much. When it comes down to it, everyone still has to rely on themselves.)
Lots of cat-like Gojo, fox-like Geto, and dog-like Dazai and Chuuya.
In my headcanon, Dazai's ability nullifies everything unscientific, including but not limited to supernatural abilities and cursed energy. So although he can't see them, he can sense cursed energy and cursed spirits.
In my headcanon, cursed spirits and cursed energy are some kind of particles <maybe neutrinos?> with a real existence and mass. That means Chuuya's gravity manipulation can affect them. So although he can't see them either, he can sense cursed energy and cursed spirits too.
This is just a dumpling feast cooked in a pot of shipping so all my couples can live and get happy endings. Logic? None. Lots of OOC.