(Pool Party), swimsuit crowd boys, young people having fun at a pool, one girl among many men, hoshinoruby, star-shaped pupils, ruby_hoshino, idol, blonde hair, bangs, pink and red eyes, left side ponytail, close the right eye, grin, looking at viewer, best quality, masterpiece, high quality, extremely detailed CG unity 8k wallpaper, delicate background, luminous particles, everyone enjoys partying, multi pose, colorful swim rings, big beach balls, water splashing, glass of cocktail,