masterpiece, best quality, amazing quality, very aesthetic, absurdres, newest, detailed background, 1boy, solo, male focus, Black Hair, Blue Eyes, glasses, blushing, shy smile, button up shirt, in classroom

size difference, fellatio, pov, from behind, worst quality, multiple views, bad quality, low quality, lowres, sketch, jpeg artifacts, , poorly drawn, simple background, watercolor, , signature, watermark, logo, blurry, bad anatomy, bad proportions, bad hands, deformed, extra digits, 3d, pussy, 1girl, easynegative, (muscular:1.3), twi mechanical arms, two mechanical legs