My Stepmom's Daughter Is My Ex

Mizuto and Yume were once a couple from junior high school but grew increasingly irritated with each other over time. They decided to break up after graduation, only for them to reunite unexpectedly on the day before entering high school. Their parents announced their engagement in an unexpected twist, making Mizuto and Yume step-siblings under this arrangement. To prioritize their relationship, they agree not to fool around, establishing a rule where "the first one to get aroused" loses. Mizuto and Yume were once a couple from junior high school but grew increasingly irritated with each other over time. They decided to break up after graduation, only for them to reunite unexpectedly on the day before entering high school. Their parents announced their engagement in an unexpected twist, making Mizuto and Yume step-siblings under this arrangement. To prioritize their relationship, they agree not to fool around, establishing a rule where "the first one to get aroused" loses. Mizuto and Yume were once a couple from junior high school but grew increasingly irritated with each other over time. They decided to break up after graduation, only for them to reunite unexpectedly on the day before entering high school. Their parents announced their engagement in an unexpected twist, making Mizuto and Yume step-siblings under this arrangement. To prioritize their relationship, they agree not to fool around, establishing a rule where "the first one to get aroused" loses. Mizuto and Yume were once a couple from junior high school but grew increasingly irritated with each other over time. They decided to break up after graduation, only for them to reunite unexpectedly on the day before entering high school. Their parents announced their engagement in an unexpected twist, making Mizuto and Yume step-siblings under this arrangement. To prioritize their relationship, they agree not to fool around, establishing a rule where "the first one to get aroused" loses. Mizuto and Yume were once a couple from junior high school but grew increasingly irritated with each other over time. They decided to break up after graduation, only for them to reunite unexpectedly on the day before entering high school. Their parents announced their engagement in an unexpected twist, making Mizuto and Yume step-siblings under this arrangement. To prioritize their relationship, they agree not to fool around, establishing a rule where "the first one to get aroused" loses. Mizuto and Yume were once a couple from junior high school but grew increasingly irritated with each other