NSFW Roarschach's guard duty (m) (Patreon)

Roarschach's patreon reward for this month, got it done early because I have other art I've needed to ship out to him! This was a really fun prompt: "The premise is that someone was teasing him while he was on guard duty, got him all worked up, then left. He can't leave his post until his shift is over so he just has to stand there and wait it out."