Upotte!! S00 E01 Behold! Laugh!

"Forget about girls with guns. These girls ARE guns!"

Funco, Ichiroku, Eru and Sig go on a camping trip in the mountains where they do some fishing in the river, smash a watermelon and relax in a hot spring. Later as the girls turn in for the night, Funco and Sig make a promise that they’ll always be together.