Sakura Yoshino is Jun'ichi Asakura's older cousin and first love. After being raised partially in America, she returned to Hatsunejima. Despite her actual age surpassing Jun'ichi's, her physical appearance remains that of a young girl due to a wish she made to the magical sakura tree to always be as Jun'ichi remembered her, resulting in agelessness that persists even into her sixties. She stands 140 cm tall, weighs 31 kg, and has blond hair typically styled in twin tails with blue ribbons, blue eyes, and fair skin. She commonly wears school uniforms or a black shirt under a white short-sleeved shirt with a skirt. She possesses an IQ of 180 and inherited magical abilities from her grandmother, allowing her to unconsciously influence events through her thoughts, though she struggles with kanji due to her upbringing abroad. Her personality combines high energy and affection with moments of jealousy and mischief. She openly competes with Nemu Asakura for Jun'ichi's attention, often addressing him as "onii-chan" to encourage his protection while clinging to him physically, and uses "boku" as a first-person pronoun. Her interests include Japanese sweets and historical dramas, while disliking green peppers and carbonated drinks. As children, Sakura and Jun'ichi made three promises: to reunite, to help each other in trouble, and to become lovers upon reuniting. She knew Nemu overheard but reiterated them anyway. Jun'ichi ultimately could not fulfill the romantic promise due to his relationship with Nemu. In *Da Capo: If*, Sakura plays a critical role in saving both Nemu and Jun'ichi from a magical demise linked to the sakura tree's influence. Her wishes sometimes lead to unintended consequences, such as inadvertently causing Nemu's illness or death in certain scenarios when she desires Nemu "out of the way." One incident involved her killing someone who mistook her for Nemu, highlighting her volatile reactions when angered. In *Da Capo II*, Sakura serves as the principal of Kazami Academy despite her childlike appearance. Loneliness drove her to wish upon the sakura tree for companionship, resulting in the creation of Yoshiyuki Sakurai, who became like a son to her. She later fused with the sakura tree to stabilize its magic and prevent Yoshiyuki's disappearance, sacrificing her physical form. By *Da Capo III*, she revives 20 years after this fusion but loses all memories, eventually forming new bonds with Kiyotaka Yoshino and Ricca Morizono. Her familiar, the white cat Utamaru, appears across multiple installments, and she later adopts a dog named Harimao. Her character arc explores themes of enduring love, the consequences of wishes, and the burden of magical power, positioning her as a foundational figure whose actions reverberate through the series' mythology.