Karl Neumann  

Karl Shubert, カール・ノイマン / カール・シューバルト

A student attending Munich University who is the offspring of Schuwald and Langer. Despite wanting to maintain a distance from his dad, he's trying to strengthen their relationship without revealing their true connection. Simultaneously, this individual is entangled in the enigma surrounding the demise of another pupil and the disappearance of Johan Liebert following an arson incident at the library during which Schuwald's book collection was destroyed. This character first emerges in Chapter 47 according to Wikipedia sources.