Jerk Sue: Tsurugi. He's a director, producer, dancer, choreographer, author, screenwriter, voice coach, and incredibly abusive. Possibly a deconstruction because people close to him come to realize his abuse. Oh, and because he's batshitinsane.
Woolseyism: (End of series spoiler.)During the massive infodump in the 14th episode, Wakagi uses the word "omoi" — Japanese for "thoughts", "feelings" and so forth — to describe the substance Ajo referred to as "Gel". The Viz translation uses the German word "Geist" ("mind", "spirit", and/or "ghost"), which helps get the point of it being Life Energy across.