Inui Seishu has an undercut sunflower-blonde hair with green-emerald eyes and a burn scar at his left eye Inui is 17 year old boy with an average-height male with 172 cm tall , Inui is stoic , quiet , blunt , cold , aloof and expressionless , he can be ruthless sometimes Inui is a deliquent and an executive of the 10th generation black dragon Inui has a best friend called Hajime Kokonoi (koko) and a dead older sister , Inui Akane