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From Lovesick Alley: Average-looking, always speaks-her-mind Hachiya Nanami just wants a boyfriend that likes her for her—preferably the school's popular soccer star, Mizuno. As their best friends start dating, they immediately find that they, too have a lot in common. This is the perfect chance for Hachiya to finally score her dream guy. But does Mizuno feel the same way?
Sachi and her boyfriend Takara are your average high school couple. They go to school together, hang out, and even engage in the more intimate side of dating. However, as time passes, Sachi starts to get the feeling that something isn’t right and decides to buy a pregnancy test. Later, in the bathroom of a family restaurant far from her home, she sees the two red lines that will change both her and Takara’s life forever…
(My Girlfriend's Child prequel) The story of Sachi and Takara before they started dating.