male high school student、boxing、 male、erotic、erections、Sweating、boxingパンツ、 Supporters 、 OK

nsfw, lowres, (bad), text, error, fewer, extra, missing, worst quality, jpeg artifacts, low quality, watermark, unfinished, displeasing, oldest, early, chromatic aberration, signature, extra digits, artistic error, username, scan, [abstract], woman