Prompt

Depict a realistic male masturbation scene! / Faithful to the prompt / Ultra-realistic and natural depiction / Masterpiece / Highest quality / High resolution / Ultra-high resolution / Depicting the man spitting semen from his mouth is strictly prohibited / A beautiful and natural male masturbation scene / Erotic expression / He slowly kneads his pectoral muscle and stimulates his nipple with his left hand / He vigorously strokes his penis with his right hand / He ejaculates semen repeatedly from his penis toward his own chest / The ejaculation scene is ultra-realistic and ultra-sexy / He wears a surprised expression /