OVA
Description
Shōgo Mikadono, heir to the major international Mikadono Group, was conceived via artificial insemination due to parental infertility; his mother Kanoko Mikadono's husband Kumagorō was listed as his father. Kumagorō's will mandates Shōgo graduate high school and find a spouse to inherit company leadership, prompting his transfer to Miryuin Private Academy.
A handsome teenager, Shōgo sports chin-length brown hair, gray-blue eyes, and wears the Miryuin uniform. He bears a distinctive forehead scar from a childhood car accident that caused partial memory loss. This accident occurred while saving his friend Miyabi Kannagi, erasing his memories of earlier friendships with Miyabi and Konoe Tsuruma.
Naturally kind and caring, Shōgo attracts others easily. He possesses sharp deductive skills and keen observation. Initially resistant to inheriting the business, he demonstrates inherent acumen. His central focus is investigating rumors of a "mysterious sister"—a half-sibling supposedly attending Miryuin. Anonymous calls and messages claim one girl around him is his sister, leading him to methodically gather clues and DNA evidence while navigating romantic advances.
His relationships are complex. Konoe Tsuruma, his first friend at Miryuin, is later revealed as his childhood friend who witnessed the accident. Miyabi Kannagi, another classmate, is the girl he saved and shared a childhood marriage promise with. Both develop strong romantic feelings, creating a rivalry. Other girls, including student council members and café owner Mei Sagara, also express interest, complicating his search for a spouse and his sister. Shōgo frequently encounters accidental compromising situations with them.
The investigation culminates in family revelations. DNA testing and Kanoko's confession confirm Kumagorō is not Shōgo's biological father. Konoe is revealed as Kumagorō's biological daughter from an extramarital affair, making her Shōgo's half-sister through their mothers but not by blood. Shōgo reconciles his past, emotionally acknowledges Kumagorō as his true father, and chooses Konoe as his romantic partner. They marry. Concurrently, Miyabi's father marries Kanoko, making Miyabi Shōgo's stepsister/cousin.
A handsome teenager, Shōgo sports chin-length brown hair, gray-blue eyes, and wears the Miryuin uniform. He bears a distinctive forehead scar from a childhood car accident that caused partial memory loss. This accident occurred while saving his friend Miyabi Kannagi, erasing his memories of earlier friendships with Miyabi and Konoe Tsuruma.
Naturally kind and caring, Shōgo attracts others easily. He possesses sharp deductive skills and keen observation. Initially resistant to inheriting the business, he demonstrates inherent acumen. His central focus is investigating rumors of a "mysterious sister"—a half-sibling supposedly attending Miryuin. Anonymous calls and messages claim one girl around him is his sister, leading him to methodically gather clues and DNA evidence while navigating romantic advances.
His relationships are complex. Konoe Tsuruma, his first friend at Miryuin, is later revealed as his childhood friend who witnessed the accident. Miyabi Kannagi, another classmate, is the girl he saved and shared a childhood marriage promise with. Both develop strong romantic feelings, creating a rivalry. Other girls, including student council members and café owner Mei Sagara, also express interest, complicating his search for a spouse and his sister. Shōgo frequently encounters accidental compromising situations with them.
The investigation culminates in family revelations. DNA testing and Kanoko's confession confirm Kumagorō is not Shōgo's biological father. Konoe is revealed as Kumagorō's biological daughter from an extramarital affair, making her Shōgo's half-sister through their mothers but not by blood. Shōgo reconciles his past, emotionally acknowledges Kumagorō as his true father, and chooses Konoe as his romantic partner. They marry. Concurrently, Miyabi's father marries Kanoko, making Miyabi Shōgo's stepsister/cousin.