yemihikari
Keith's worst experience in life comes back to haunt him when the paladins take a leave from the Castle of Lions only to find themselves stuck performing a mission for the garrison involving four runaway kids. The fact the Galra recaptured Shiro did not help either.
Disclaimer - I don't own Voltron: Legendary Defender or Boxcar Children. This is written for my 2017 prompt challenge for prompt number 182, which involves crossing over ones fandom of choice with a fandom from the 1940s. The fanfic is AU for the Boxcar Children series both in time, and how the events end in the first book. Keith does something stupid in this one.