A weeks later
Marinette and I have gone out several times now. The doctor says that I no longer need to live at the bakery, but her parents still allow me to. Today is Friday after school, as I am walking with Marinette I noticed someone.... someone very particular. "Well by the devil himself," I said as he walked to me, "now what are you doing here?"
"I need to talk to you," he said bluntly, "it's an emergency."
"Can't it wait, we're going home to work on homework."
"Honky, who are you talking to," Marinette asked confused.
Turning to her, then back to him, "let her see you, Dave."
"My apologize miss," he said revealing himself to her, "I did not know if you could be trusted."
"Hello," she said after taking it all in.
"My only question.... HOW ARE YOU FREAKIN ALIVE," I asked him (not super loudly, but with a lot of energy), "last time I saw you was 700 years ago, and you had five swords in your chest."
"Technically speaking I'm the just what's let of his soul," his face then grew grave, "he has returned."
I went into total shock, then I grew angry, "how is that possible, I killed him myself."
"You killed someone," Marinette asked in shock.
"He isn't human, once was, he made a deal with the devil and became some sort of walking corpse," Dave informed her, "the only way to get rid of him permanently is if Chat uses cataclysm on him, or your the final technique," he gestured to me.
"When will he be here," Marinette asked curiously.
"Three months, if you've got any other allies I'd suggest getting them ready." He began to fade saying, "be careful," and then he was gone.
"We're going to have to fight him then?"
"What do you mean 'we' I'm going to fight him, not you."
"You're not doing this alone, let's get back to the bakery, then we'll go see Fu, no but's."
I sighed, there is no use fighting her on this. After arriving at the bakery and finishing our homework we went to go see Fu. "Hey Fu, we've got a problem," I said as we entered.
"What kind of problem?"
"Negative is on his way back," I told him bluntly, "apparently he can only be killed by Cataclysm or the final technique."
"This is very serious, how did you find out?"
"An old, dead, friend came by," I informed him.
"It looks like you're going to need a little backup, I'll find suitable users for another miraculous."
"We're also going to have to train them, even Ladybug and Chat," I said turning around and beginning to pace.
"What's the final technique, you've been talking about lately," Marinette asked.
A deep guttural sigh left me, "It's a sword that I can summon that has similar abilities to the Ladybug and Chat Noir miraculous, however, it drains the strength from whoever uses it to the point of near death, it's called 'final technique' because I'd only use it as a last resort, the last time I tried to use it I had to sleep for a few hundred years."
"So, only use it if absolutely necessary."
"Or not at all," Fu said.
I stop pacing, "I know the two who we should give miraculous to." 
"Who do you think we should give them to," Fu asked.
  "I trust Alya enough to give one to her, and..." I said hesitantly, "we can probably give Hawkmoth back his, temporarily, he owes me a favor anyway."
"Are you sure we can trust him?" Marinette gave me a hard look.
"I'm sure, I'll go a little later to the mayor's office as try to evaluate the city."
"That's probably a good idea," Fu said.
"This is going to be dangerous, he'll probably raise the souls of his old allies." I leaned against the wall trying to think of how to make it look like me, Marinette, Alya, Adrien, and Gabriel be heroes, train them as well and look like their evacuating at the same time.
"This is going to be a very interesting few months," Fu said grimly.
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Hey guys, sorry I haven't been able to update for a while.
Hope you like what comes next.