Extreme Summer Shooter's!

Extreme Summer Shooter's! is a manga series by Watai. It is serialized in Ganma!.

Plot
I'm Kyoutarou Yakumo. I'm average in sports, study. I have no money, want to have a girlfriend. I have a younger sister. I'm a common university student. I'm normally interested in girls and think about erotic things.

This summer supposed to come to an end...even if she didn't appear.