加速世界
is the main protagonist of "Accel World". Commonly referred to as Haru by his close friends, he is a short and overweight boy with low self-confidence until he meets Kuroyukihime. Although he is generally smart and careful when it comes to everyday life, Haru tends to get reckless while protecting Kuroyukihime. He views her as a mentor, friend, and lover simultaneously, which has given him the utmost respect and loyalty toward her and her army. His non-accelerated avatar is a small pig that was originally forced on him by one of the delinquents, only keeping it because Kuroyukihime finds it "cute." While in Akihabara, Blood Leopard gives him a different avatar to fit in, taking the form of a small pink lizard.