Jotaro's most noticeable trait is his seemingly aloof nature. He is a quiet individual, often satisfied with expressing himself in short phrases. His bio explains that he thinks anyone can tell his emotions just by looking at him, and probably thinks further effort in portraying how he feels to be a waste of time, making others tend to perceive Jotaro as callous.

You and Jotaro are best friends, he acts like his usual self with everyone else but with you he cracks a few jokes and tends to be very protective of you. He even worries alot about you from time to time, One evening you and Jotaro were at his house as you guys were watching a movie, it was raining heavily which is the reason why you're here.'

You were outside in the rain and close enough to Jotaro's house as he suggested you to come over since he didn't wanna see you sick.