One little detail that I fucking love and appreciate: The way that Gojo and Geto call each other by their first names. Geto is the only person (other than their teacher) to call Gojo by his first name because he sees Gojo as an actual person/bestfriend rather than just the strongest born with the Six Eyes and Limitless.
The tone and delivery of when they say each other's names just shows how special both of them are to each other