Sasara Kusugawa holds the position of student council vice-president at Kaiyou High School, eventually ascending to president. Initially reserved and strict, her antisocial nature leaves her with only one close friend, Marianne, before encountering the male protagonist. When Marianne nears graduation, Sasara plunges into despair, desperately urging her to stay—a raw display of her dread of loneliness. Her story intertwines with the protagonist’s when he volunteers to aid the student council’s event planning. As they collaborate more closely—particularly after she assumes the presidency and he becomes treasurer—her emotional walls begin to crumble. Their professional rapport deepens into mutual trust, sparking unspoken romantic feelings she hesitates to acknowledge. The OVA *ToHeart2 adplus* sees Marianne engineering a pivotal scenario: a summer bikini contest judged by the protagonist, compelling Sasara to step out of her shell and confront her suppressed emotions. This confrontation sparks a decisive shift, driving her to vie for his attention rather than retreat into passivity. Her surname, translating to “longevity” and “river,” mirrors her quiet resilience. Physically distinctive with long blonde hair secured by a black headband, piercing blue eyes, and a statuesque frame, Sasara’s demeanor balances icy efficiency with undercurrents of warmth—most evident in her fierce loyalty to Marianne and her deepening bond with the protagonist. Her narrative arc across adaptations charts her struggle to dismantle social barriers and embrace vulnerability, transforming from an isolated student leader into someone willing to risk emotional exposure for meaningful connections. Games and OVAs alike spotlight her internal battles and incremental strides toward authenticity, framing her growth as a journey from self-imposed solitude to tentative emotional freedom.