Yuzuki Hazama

As Mizuki’s protective older sister, she shares a close-knit bond with her sibling and maintains a long-standing friendship with Futami. Having been inseparable from Futami since their school years, she remains a constant, supportive presence in her life despite pursuing a different career path. Within their social circle, she is affectionately known as "Ha-san," a nickname Futami uses for both her and her younger sister.