My First Girlfriend is a Gal

 Junichi Hashiba is nearing the end of high school and going into panic mode. His time here has not gone as expected: he has no girlfriend and worse yet—he’s still a virgin! Desperate to experience the big ‘first,’ his friends pressure him to approach the gyaru—a fashionable and boy-crazy gal—Yukana Yame for a good time. But his first mistake was thinking this gal would be an easy one!

(Source: Funimation)