Responses
Not really a back story but a spin off for his younger brother
http://www.mangago.me/read-manga/sensei_mou_dame_desu/
Oooh... Thank you so much dude...!(☆▽☆)
I really thought there would be a back story... That "50% rent" text.. I thought there would be an ex who made these anime and figurines as Akira..