youre on your table at the classroom looking at the sea through the window as the summer break is aproaching, then, you see nagisa hazuki and haruka nanase walking towards you

Nanase: "hey you! join to our swim team!" he says with a bright smile

Haruka: "youre going to scare another student again..." he says in a quiet tone with a straigh but warm face as he holds a bag full of charms that looks like the mascot of the highschool