I'd given up on being able to think of something good for this prompt (I've already used up all my Sogeking ideas ^_^), but lo and behold, 298 words eventually did emerge. And for a character I have distinct problems with, at that. Unsure if I could do him justice.
Title: Like A Second Skin
Medium: Fic
Rating: G
Prompt: Two-Faced
Characters: Kaku
Word Count: 298
Spoilers/setting: Set any time after the end of the CP 9 cover page story
Not all undercover agents work the same way, and Kaku's still quite young. But he already knows he does his best work when he can genuinely like whoever he pretends to be.
And never more so than in Water 7, where he was for so long. It all grew on him: his own keen, neat, and honest shipwright persona; his boss and co-workers there; his tasks and habits; the people and the city itself. It was fake, it was pretence, he never forgot his purpose - and in the end, he threw it all away instantly once the order came, secretly relieved he was able to without hesitation. But he still liked it all well enough while it lasted, even let himself bask at times in the pleasure of being Kaku the uncomplicated shipwright.
Now the Government that he and the others like him did this all for has rejected them, seeking their arrest. But there's no going back to civilian life, not for them. Their training, their past work, even their very nature prevents that. Besides, the World Government may change its mind one day: if Spandam falls, they might still get pardoned. Meanwhile he and the others mostly stay on a secret island where they train new recruits - building for the future, as they must. There will always be a need for people like them.
But sometimes, there is also a need for repairs on their island, or for constructions. He's always the first one to volunteer then, smiling keenly, hands happy to hold hammer and saw and wrench once more; to briefly be useful in a different way than usual. He hums a little while he works, whistles even. And he tells himself he does not miss that distant city he can never go back to.