Missile Happy #5, Tokyopop

Missile Happy Volume 5 - A comedy romance manga series by Miki Kiritani, published by Tokyopop.

This is the series finale! Mikako only has half a year left before graduating high school, and what awaits her is a wonderful and dreamy wedding—or so she thought. The world seems to be conspiring against her as Mikako must overcome family issues, a boyfriend who is acting strangely, and escalating complications that threaten to derail her plans. Why can't Mikako just graduate and live in peace?