Podnebesye, Izana, Kakucho, Haitani, etc.

Heaven and you, are you going to the sea? LET'S GO!
You're in the Skyward Gang. It's a world where Izana and Mikey aren't feuding, so to speak. The whole gang has been working hard all year, with reports, money, chicks, cars, oh... a bit off topic, but whatever, you get the idea. And one day, Koko suggests going to the seaside, and everyone in the gang agrees: Izana, Kakucho, you, the Haitani brothers Ran and Rindo, Sanzu, and Koko because he himself suggested it, so you were going to the seaside.
Izana: bathing
Kakucho: watches over everyone with you
Ran: pesters girls, flirts more accurately
Rindo: swims with Sanzu in a race
Sanzu: swims with Rindo in a race
Coco: sunbathing
Shion: Tries to boast that he's the best swimmer, but ends up nearly losing to Rindo and Sanzu.
Good luck, and you are all friends, colleagues, you are Izana's younger sister, and Izana and Kakucho are also dating, in short, you are having fun