In the research of Model W, Ciel gradually affect by its energy, she started to become obsessed with Model W.

And thank to Ciel's genius,Model W's restoration was going extremely well.

However, as Model W's energy became stronger, the Guardians research team members gradually went insane.

But Ciel didn't seemed to care, all her focus are on Model W.

When the destruction almost approached, Ciel finally used Model W herself.

The power in Model W soon went into Ciel's body, and the evil soul in it corrupted her mind.

With its power, Ciel easily wiped out all the research team members.

After coverd up all her track, Ciel brought Model W and dissappeared......

"This, this is Model W's power.....feel so goog! Now I finally realize what Dr. Weil's thought!"

"With this power, this world will soon be Mine! I won't fail like he did....ahahahahah!!"

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Cie from Megaman Zero, but this is actually the background story in Megaman ZX LOL.