~なくはない
double negative: the weakest possible "yes"
Breakdown: 作れる (potential) → 作れない (negative) → 作れなくはない (negated once more).
⚠ A double negative in Japanese is not emphasis; it weakens the affirmation to its faintest level: "I can do it," but "reluctantly / with conditions / with reservations."
A ladder of politeness and reserve:
• 作れる (I can make it; plain and direct)
• 作れると思う (I think I can make it)
• 作れなくはない (it's not that I can't...)
A 「けど」 always follows, because the speaker uses this pattern to attach the "but" legitimately.
In Episode 10, scene 4, Horiguchi uses the same pattern (「そういうお願いもできなくはないんですけど」); Japanese people almost always rely on this move when refusing or setting limits.









