 Kleine 's private lessons for Busch were also attended by Erich Bachmann , the son of a wealthy Ebergötzen <unk> . Both became friends , according to Busch the strongest friendship of his childhood . This friendship was echoed in the 1865 story Max and Moritz . A small pencil portrait by the 14 @-@ year @-@ old Busch depicted Bachmann as a <unk> , confident boy , and showed similarities with Max . Busch portrayed himself with a " <unk> " , in the later " Moritzian " <unk> style . 
