Sohara Mitsuki, a teenage girl with long brown hair often swept into a ponytail and warm brown eyes, stands 158 cm tall, her figure marked by striking proportions (92-59-84 or 93-59-84). Her complex bond with childhood friend and neighbor Tomoki Sakurai anchors the story, defined by fiery clashes over his antics, met relentlessly by her iconic "karate-chop of doom"—a reflex honed through accidental training in their youth. Her past reveals frail health that isolated her socially, leaving Tomoki as her sole solace. A pivotal birthday, spent in loneliness, shifted when he gifted her orange seeds and shared cake, forging an unbreakable connection. This moment masks tragedy: the original Sohara, revealed as Daedalus in the manga, succumbed to her fragile condition, her existence erased by Synapse. A clone replaced her, implanted with memories and emotions to safeguard Tomoki’s recollection of their bond, though he never learns the truth. This replica harbors Sohara’s unspoken love for him, which surfaces in vivid, blush-inducing dreams of intimacy. Beyond comedic clashes, her loyalty shines—rescuing Tomoki from drowning, steadfastly waking him each morning. Stranded together on an island, their rare harmony emerges as Tomoki tempers his behavior to support her, hinting at mutual affection beneath their bickering. Her gullibility fuels recurring humor, like falling for his pranks that trigger her underwear’s explosive demise. Disastrous cooking nearly turns lethal, adding to her quirks. The manga later unravels her cloned origins as part of Daedalus’s mission to protect Tomoki and Angeloids, cementing her role as a guardian of their shared history. In the OVA "Project Pink," a dream of marrying Tomoki lays bare her longing, followed by a flustered cherry blossom viewing with him, echoing unresolved feelings. Her physical evolution, particularly her bust size, sparks in-story remarks. Interactions with Angeloids weave camaraderie with rivalry, tinged by jealousy over Tomoki’s attention, yet she remains fundamentally kind-hearted toward them.