Hikari is slightly taller than Sekai and Kotonoha, and has similar measurements to the former. She has green eyes, and her most prominent feature is her brown squid-rings hairstyle. She's almost always seen in her school uniform but can also be seen in a casual attire that consists of an orange hoodie with a pale skirt. She's mentioned to be one of the cuter girls in class by Makoto in a certain route.