※추정 권수·복간 횟수·연재지 등을 바탕으로 한 참고 추정치입니다(실측 아님)
작품 개요
This prequel tells the story of Minori and Youko's relationship during high school. The last chapter is about Ichika and her high school days titled "Happy Birthday"
출처: AniList
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