Hiro had been hanging back this whole time, saving himself. He'd noticed a tendency to end a battle winded, tired, sore, even if he hadn't taken much damage himself. Was it his constitution acting up? It had been weak as a child...regardless, he'd decided not to burden the others by constantly requesting aid, and try to save his strength for when he REALLY needed it. And now, it seemed, they did. He'd let the others try talking to Kou. He was no psychiatrist, and he didn't want to be responsible for making the situation with Kou even worse...which had happened anyway, though, honestly...the way Reizo had asserted himself and tried to take control like he did...Hiro could appreciate that, even if it hadn't worked.
But now it looked as though they'd fight their toughest opponent yet. First thing's first, he needed some help from Arjuna. His cellphone was out in a flash, his hand hitting the speed-dial for the Persona number. "Arjuna, Tarukaja now!" He cried, and immediately, the golden warrior did its job, increasing Hiroshi's power...