In the final episode ("NEW WORLD"), Ultraseven X is revealed to be the original Ultra Seven, crossed over into a parallel universe in order to save both his world (the "M-78 universe"), and this new one, from the threat of the Shadow Rulers.
Dalam episode terakhir ("NEW WORLD"), Ultra Seven X diturunkan menjadi asli Ultra Seven, menyeberang ke alam semesta paralel untuk menyelamatkan dunianya ("alam semesta M-78") dari ancaman Penguasa banyangan.