Damn, Izumi thinks he's the one being left out, but in reality Haruta carries the burden alone. And Ichika doesn't suspect a thing? Guess ignorance really is bliss. Thanks for the chapter!
So I guess with Haru being the only one in arm sling from the flashback he doesn't have the superhuman cells transplanted into him and is the only 1 among the 3 fully aware of the situation.
Damn, this is getting good.