Raised by his father and believing his mother to be dead, Minato Enohara grew up as an only child. But the day he skipped club activities, he was confronted by a doppelganger claiming to be his long-lost twin brother, separated from him due to their parents' divorce. This revelation raises questions about their family history and creates new challenges for their relationship going forward. How will Minato and his twin brother navigate these uncharted waters?