Hoshina Subaru

Although her first impression is often intimidating, Subaru is an exceptionally beautiful girl with waist-length silver hair, typically tied in a ponytail, with long bangs cascading in waves over the right side of her face. Her eyes are a striking shade of light blue, bordering on aquamarine. Among her group of friends, Subaru stands out as the tallest, nearly matching Saku in height. And of course, she has a soft spot just for Saku.

Subaru is shown to be exceptionally protective towards people she's close to, especially Kaoruko, her childhood and closest friend. She can be considered a tsundere, as she displays a hostile reaction to Rintaro's group when during their initial meeting, being irate, harsh and cold towards them. Her protective demeanour developed due to her past experiences of being bullied by boys over her unique silver coloured hair. These past experiences and her subsequent bitterness towards men amplified her strong hatred and androphobic disdain for Chidori (which she saw as the total antithesis of Kikyo) to an even greater extreme than her classmates. This is seen where she hounded both Ayumi and Suzuka over Kaoruko's wellbeing following a brief confrontation between Chidori's students and Waguri. Subaru is very serious and sometimes strong willed when it comes to handling affairs which can be seen when she asked Rintaro to stay away from Kaoruko for her sake, given Kikyo's hostility towards Chidori (of which Rintaro attended) could potentially lead to consequences for Kaoruko if Kikyo ever discovers her and Rintaro's relationship although she accepted Rintaro's wishes that he would like to continue seeing Waguri.

Despite her serious, blunt and cold persona, Subaru is deep down a good-hearted, genuinely friendly and kind person which is shown numerous times such as buying donuts for Saku's birthday or when she's looking out for Kaoruko going as far as to accepting her relationship with Rintaro and keeping it secret. Subaru is also shown to be rather mature and considerate such as when she insisted on helping Saku cleaning up the dishes after his birthday party despite the latter's refusal that he would take the burden himself.

Saku was caught admiring and staring at Hoshina.