ハイスコアガール EXTRA STAGE - 小春からの突然の告白に戸惑うハルオ。その上、晶の家庭教師・業田には晶との関係を断つよう迫られ、モヤモヤを抱える日々を送ることに。それでもゲーマーとして胸を張って晶に会うため、ハルオは小春との交際を賭けた格ゲー対決に挑むことを決意する。
High Score Girl: Extra Stage - Four years after they first met, Haruo Yaguchi , Akira Oono, and Koharu Hidaka remain the best of friends. Tensions start to build up as Akira's teacher, Gouda Moemi, becomes stricter than ever before, and Hidaka develops feelings for Haruo. Though he may not be the most composed and thoughtful person around, he has within him the one thing that started it all: his unconditional love for video games.
