This is three minutes that fix everything the anime broke. After years of filler and a botched ending in Seisouhen, the manga's actual conclusion finally exists on screen, Kenshin and Kaoru's life together, quiet and real, stripped of melodrama. You need to have loved the original series to feel what this does, but if you did, those three minutes are why you kept the DVDs in the first place.
Samurai X DVD-BOX Special Ending is a single-episode special: the closing scene included in the 10th anniversary DVD box of Rurouni Kenshin, which came out in Japan in 2007. Rather than inventing a new conclusion, it adapts the way the original manga ends. The result is a short romance epilogue that brings the story to its manga finish.