"Izanagi?" Souji doesn't really have to think about it--he remembers clearly. "When Yousuke and I went into the TV world the first time, a couple of shadows attacked us. I reacted instinctively, I guess, and summoned him."

'Instinct' is the only word he can think of for it in retrospect. He can't remember how he knew the Persona was there in the first place. Except...

He glances to one side, drawing together the threads of memory he has about the beginning of that year. His voice comes out sounding vague, like there's something important he can't quite grasp.

"...The night before that, I heard his voice in my head."