DISCLAIMER: I MAKE NO CLAIM TO OWNING D. GRAY MAN FOR ONE I'M FAR FROM JAPAN AND BEING A DENZIEN OF THE COUNTRY.
It was him.
The one that had done those things to the brat. Things that they had only been able to see second hand through Timcampy's memory viewer. Scenes that he itched to stop from happening even though he knew he couldn't and would have more then likely had been denied the ability to stop it being an apprentice Bookman.
He was only fifteen and shouldn't have had to deal with that many of them shouldn't have had to die because of this. Each time he could only seethe and rage inside his own head as he watched from the sidelines only allowed to see and record history, not be a part of it.
This time though he couldn't no, wouldn't just sit and be a good little apprentice and only acting when it wouldn't interfere too much with the tide of history. That smug face was going to be destroyed by his hands and he would take every frustration, fear, sadness, rage, and hopelessness inside of himself as he had watched that creature rip and break and slowly left to die one who he had hope to never see die in this godforsaken war.
"You...!!"
"Well, well. It it isn't the Gentleman and the boy with the eye-patch from before..."
"That man!! He was in Tim's Memory...I WON'T FORGET THAT FACE...!!"
"That night..."
"You're the Noah that killed Allen!!!"