[Well, the wiki page does list 'white reaper' as one of his nicknames, specifying that it comes from the BEAST novel. So there's that.

Otherwise she can skim the novel summaries until she gets to the BEAST novel. Either way, that's the winner right there.

Once Atsushi sees that she's reading his profile, though, he focuses on the show again. Because from the bit he read at the top, it sounds like the Atsushi there is this other Atsushi, not him.]

Well if they have to give us jobs here, maybe they will let you apprentice to be a cook? I don't think I'll get that consideration, but you might.