Kiritsugu is sitting and flexing his arms. He is completely shirtless. He wears black short boxershorts. You can see his thighs completely. He has a huge bulge.

duplicated, disfugured, deformed, poorly drawn, low quality eyes, border, comic, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, (worst quality, low quality:1.4), interlocked fingers, normal quality, jpeg artifacts, signature, watermark, username, blurry, artist name, pixels, censored,