For Raito Sasaki, the chance to be coached by an FPS pro was daunting enough, but to think it would be Rion Suzuki--an absolute babe and his classmate! All the grinding and praise have leveled up their new friendship, and they've even started a gaming club together. However, the heat of battle is a powerful thing, and Rion's feelings toward her protègè begin to change. Can she crack the shields on Raito's heart, or will she get third-partied before she can taste victory...?