Plot: Challenged Graduation (チャレンジド〜卒業〜) is a two-part Japanese TV drama special aired on NHK in 2011, serving as a sequel to the 2009 series Challenged. Set one year after the original, it follows Keiichiro Hanawa (Kuranosuke Sasaki), a blind middle school teacher, as he guides his third-year students through their final school events, including a field day and preparations for exams and graduation