Makoto Kikuchi, Vivid Bikini, Idolmaster

The image features Makoto Kikuchi, a young woman with short, gray hair and a vibrant smile, posing in a black bikini by the pool. She is leaning on the railing of the pool's edge, wearing a black bikini top and bottoms adorned with white flowers or ruffles. Her left hand rests on her hip, while her right hand holds onto the railing for support. The background is blurred, but it appears to be a sunny day at an outdoor swimming pool, possibly during a summer vacation. The overall atmosphere suggests a fun and relaxed setting, perfect for enjoying the warm weather and cool water.