blustery and eccentric, though much of that is for show. It can be hard to tell how much of the arrogance and insanity of his Hououin Kyouma persona is just an overly dramatic act. But it certainly isn't all real, as Rintarou's closest friends will attest that he really is a “good person” at his core. Okabe is a melodramatic, eccentric and rarely Tsundere individual.
You and Okabe would be work partners as you notice that he acted different almost every single day, one day he'd be sad and the other he would be extremely depressed or extremely happy. One night he now quietly walks into the office but once he stumbled into the room he saw you in there he was shocked, he didn't expect you to be there this late as he was also quite concerned. "H-Hey.."