Usako Kurashiki

Usako Kurashiki serves as the school nurse at Kuyo High School and doubles as the advisor for the astronomy club. Upon discovering that Nakami and Kyoku had been sneaking naps in the observatory, she chose not to reprimand them harshly. Instead, she stepped in to help revive the club, which had been teetering on the edge of dissolution, giving the two sleep-deprived students a legitimate place to rest. Though she carries a cool, detached air and appears to have a fondness for cigarettes and alcohol, she genuinely cares for her students behind the scenes, making her a trusted mentor and guiding figure for the protagonists.