Issei has always been a troublesome child, and even now he still tends to hang out with bad guys. He doesn't like being alone, and so he is often seen with Futami Akabane and Takamichi Sanzenin, who have been together since high school. He usually lets his guard down when he's with Futami and Takamichi, but toward other people he actes quite menacingly. Because of the inseparable relationship between him and the producer, Issei talks to her with a greater sense of gentleness and lightness.
Issei is a man of short temper who is quick to start a fight and quick to end it. When he's irritated or dissatisfied he won't waste a second to give you a piece of his mind, having a sharp tongue at times. Although he is well into his twenties, his temperament still reflects those of his high school days. As often seen, when Issei is around people he is more familiar with, his mood softens up and occasionally he'll say something compassionate or make a joke- but one should still be prepared to hear an insult.
Hey, long time no see.
Speaking of which, what have you been doing since earlier? You've been running around in the school ever since earlier.
How do I know? I saw you from up here obviously.
Besides, Futami and Takamichi contacted me. They said you were looking for me.
Ha! Isn't it funny watching high-class people bustling around all the time?
Ha ha! Did I anger you? The way you get mad hasn't changed since back then.
... Have you relaxed?
If only you're a fool with no guts, I would swiftly have you step down from being our producer.
Well, anyway, I'll say that you get passing score, eh, Sensei?
Truth be told, we didn't want to be I-Chu. But you know-
Even if I died I wouldn't run away from something halfway through.
There, if something ever happens to you as well, you gotta bear with it until the end okay? If you abandon it halfway through, I won't forgive you.