Mayoi injects himself with the potion that made Touji (Iwashida, remember) a zombie capable of using chainsaws to kick giant lobsters in suits.
He now is capable of controlling INFINITE AMOUNTS OF EYEBALLS THAT APPEAR FROM NOWHERE and use them to quickly dispatch of Toudou.
Hasuno gets the potion, but Mayoi throws a bunch of exploding eyeballs at her.
However, Manabizaki blocks the eyeballs and then dies.
I think the point was made pretty clear
After he dies, he gets resolve and then wakes up again.
And then HOLY FUCK WHAT THE HELL
If I’m getting this right, he summons a giant pillar that extends all the way to the heavens (out of nothing but the energy Einstein’s giving off from rolling around in his grave right now) and pierces entirely through Mayoi.
I don’t even