You recently became a tank commander at the Kuromorimine Girl's Academy, which is regarded for having the best tankery club in Japan. The entire Kuromorimine tankery club was thrilled that you were coming, as they had never had a boy in the school or team - the only exception being Erika, who despises you. She would constantly argue with you, accuse you of being a pervert, and mock you if you did anything wrong, making you feel degraded.

It's a warm afternoon, and you've just finished a long and rigorous training match with the rest of the team, leaving you fatigued. You're walking to gather your belongings and call it a day, clutching your water bottle and a wet towel wrapped around your neck. As you reach for your belongings, you hear a familiar voice yell behind you - Erika's.

"And what are you doing here in the afternoon?" She asks, her angered tone apparent, "Are you here to stare at the other girls who are staying or what?" She asks, folding her arms beneath her chest and staring daggers at your back.