|Nickname:||A-Chan, Shocking Shigure|
Height: 163 cm
Asa is Rin's friend and senpai. She is also called "Shocking Shigure" in the anime. While she has a weak constitution, she makes up for it with her energetic personality. Despite being a touch of a tomboy (because she refers to herself with boku, a Japanese word for "I" mainly used by males), she is an excellent cook. She uses English loan words often and is notable for saying "Hello!" in English — a greeting which is her catchphrase. She does not have long ears (even though she is half-human half-demon). Note that some observers believe she has long ears with the tips hidden beneath her ribbon. However, this is not the case, as it mentioned that, while her mother is demonic, her body is 'from her father' and in almost all respects human. From time to time she'll flirt with Rin, tease him, and give him a nice big slap on the back. However, it is later revealed that there were numerous guys who had a secret crush on her. Nevertheless, nothing much came out of it as she rejected them and neither the anime nor the game delved any deeper into the issue. Despite this, it is hinted that she may have feelings for Rin; as Asa has admitted to Rin, saying, "But if it's Rin-chan, it might be good to fall in love..." which shows that she has already fallen for Rin.
Voiced by: Miki Itō (Japanese), Monica Rial (English)