A 16-year-old high school student who works at a beach during summer. He initially misidentifies his stepsister Miyuki as a romantic interest, later dates his classmate Miyuki Kashima, and lives alone with his stepsister. He is deeply troubled by conflicting filial and romantic emotions regarding his stepsister's unknown blood relation to him.
Biological stepsibling relationship established after six years of separation.
Explore the full interactive character relationship map of Miyuki