Birthday: April 28 (Taurus)
Blood type: O
Specialty: Super High School Level Good Luck
Nagito is a polite, friendly, and easygoing, yet somewhat insecure boy. Hajime Hinata even mentions that his bright smile is very comforting. He was the only one that stayed with Hajime while he was unconscious, and expressed concern for his well-being, even after Hajime told him to go away. Though friendly with everyone, he is mostly interested in spending time with Hajime, and can be quite clingy. Hajime considers him a little annoying and not the most reliable, but still a kind person.
Nagito attempts to be the team's conflict mediator and a poster boy for optimism, often encouraging others to be hopeful and to cooperate. However, he isn't taken very seriously. Hiyoko Saionji makes fun of him and considers his dramatic pep talks about hope and friendship embarrassing and tiresome. He is generally quite submissive and has a self-deprecating attitude, even agreeing with Hiyoko and the other's snide remarks.
Although he claims to be a pessimist, Nagito often appears unusually carefree. He lacks tact and occasionally says awkward, strange, and unsettling things without realizing it. At times he can also be more forceful—he is quick to scold Hajime when he's being too pessimistic or when he thought he was bullying Mikan Tsumiki. He is also notably annoyed by Teruteru Hanamura's treatment of girls and decides to keep an eye on him to make sure he won't harass anyone.
(Source: Danganronpa Wiki)