If you're looking for anime similar to Koume-chan ga Iku!! R, you might like these titles.
It’s summer, and while most teenagers are off enjoying the holiday, the Seioh Student Council has decided to take a special camping trip – but first they need the money for it. Though the group starts working at cleaning a swimming pool to fund their excursion, it doesn’t take long for them to be distracted by drinks, talk of why summer is special and, of course, water pistol fights! Despite their antics, they manage to get together the dough and embark on their great outdoors adventure – that is, if they don’t melt in the heat or get blown away by a typhoon...
This is a story of a young man named Kariage who works as an employee in a private company named Honnyara Industries.