Solving the Case is Slightly Bitter, My Sister is Super Sweet.

Summary

The story revolves around two childhood friends, a mischievous boy and a crybaby girl, who grow up together despite their mutual annoyance. Their bond deepens through shared experiences, from elementary school to high school, culminating in a bittersweet separation after college entrance exams. The girl, feeling betrayed upon seeing the boy with another girl, seeks solace and finds support from her friends, leading to a humorous confrontation. Ultimately, misunderstandings clear up, and the boy publicly declares his love for her. They marry after graduation and have twin daughters, while the narrative reflects on the nature of childhood love and the joys of family.

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