Atsushi Hanazono is the older brother of Hikari Hanazono.
Atsushi is a kind and caring young man. He loves Hikari very very much, and keeps a very strong promise. His promise is to never get mad, for when his friend hit Hikari when they were kids, he got so mad that when Hikari saw his face reaction, she fainted. This caused Atsushi to promise Hikari that he would never get mad again because if he did, he is scared that she might faint.