The Devil in I

After Tatsuya's taunt the lines or red on Kaneki's face began to grow. It was as if his sanity was being sapped from his body as a sadistic grin grew across his face.
I was so distracted by his expression that I barely managed to notice the umm, face mask, maybe? It looked kind of like a beak that stemmed from the center of his back and over his shoulder that covered the right side of his face.
When I thought it was over, he started to scream as two I think they're kagunes that looked like centipedes grow out of his back above the already present kagunes.
The new ones were most black and blue except at the end they were orange and red.
"Looks like I need to get serious as well." Tatsuya calmly proclaims. As he pulled off his shirt revealing a belt that wasn't an ordinary belt.
He pressed on what looked like an ordinary belt buckle, but before I knew it he was covered in what looked like a skin tight suit. From head to toe he was wrapped with black except for his eyes which where covered with silver.
"This isn't going to be good." Miyuki says with an unwavering smile on her face.
"Leo, can the arena withstand this?" He sighs "Probably not, but what can you do?". Not a very reassuring answer.
I turn to Percy, but his mouth is wide open while he mumbles "They're on a whole different level." Over and over. "Percy, what do you mean?". He gulps before answering "Judging from their power levels they're probably on Tartarus' level. The gods,titans, and Giants wouldn't stand a chance against them. You saw what ken did to Kronos, right. I thought that's all he had, but to find out he was this much more powerful, and to obtain this power he had to sacrifice his sanity. Tatsuya is just as strong if not stronger. I'm glad they're on our side." He says with beads of sweat running down his cheeks. Were they really human? Kaneki may be a ghoul now but he was born a human, and as far as I can tell Tatsuya is human,right?

Notes

Sorry for not updating I've been bingeing on anime.