Birthday: November 17 Hiroshi is a 16 year old boy and is the main character of the story. His family moved to the city of Jōga due to reasons relating to his father's line of work. The kanji for his name can also be read as "Hakase", so many people call him that as a nickname. Hiroshi is not fond of this nickname, because it makes people believe that he is smarter than he is. Despite this, he still allows Kaname to call him by it.
Hiroshi later learns from Nemuru that he is a 'Temptation', a rare human who emits a subtle scent so intoxicating to Jouga wolves that constant exposure will drive them insane. While all humans emit some faint trace of this scent, small enough that most can resist it without much difficulty, less than one in a million may exist whose scent has such volume and potency.