インペラーを倒し、英雄に近づいたと思うタイガは王蛇に再戦を挑む。深く落ち込む真司をよそに、優衣たちはクリスマスの準備で大忙し。だが、そんな優衣の体が、ミラーワールドで時間切れを起こしたときのように蒸発を始めた。一方、ミラーワールドでは……。
Shinji realises that Yui is fading but doesn't believe it at first. However, Yui realizes it herself later and begins to panic, and she calls Ren to pick her up.
ORE Journal is seized due to the failure of the Mirror Monster scoop. However, Chief Editor tells Shinji that as long as his PC is in hands, the ORE Journal will continue to exist.
A child version of Yui appears inside the mirror, and warns present Yui that on her 20th birthday, she'll disappear.
Reiko orders Shimada & Megumi to spy on Kitaoka.
Asakura tells Tojo that he was really the one that killed Mitsuru.
One of the Sheerghosts begins to multiply, creating thousands of them.
