Reina Aharen is the main protagonist of the anime series 'Aharen-san wa Hakarenai'. She is a petite and quiet high school girl who struggles with gauging personal space and distance in social interactions. Her inability to judge proximity leads to awkward and comedic situations with her classmates. Despite her shy demeanor, Reina is friendly and deeply cares for her friends. Throughout the series, she forms a close bond with her seatmate, Raido, who helps her navigate social challenges and develop meaningful connections with others.