(Pool Party), swimsuit crowd, young people having fun at a pool, hoshinoruby, star-shaped pupils, ruby_hoshino, idol, blonde hair, bangs, pink and red eyes, side ponytail, one eye closed, 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 and beach balls, water splashing,