Whew, that was one major battle with Team Natsu fighting against Lullaby. And not to mention totally badass.
Lucy using Hellblaze to hurt Lullaby was really badass. Lol! And poor Natsu was sulking because his flames hardly did any damage, while Lucy's Hellblaze damaged Lullaby severely.
Oh wow, and words can't describe how intense that battle between the Demons of Zeref and the Ten Commandments of the Demon Clan was in that flashback part after Lucy used Hellblaze on Lullaby. Totally awesome!
Oh yeah! And Team Natsu working together to defeat Lullaby. Lol! Loved Lucy and Erza's arm wrestle afterwards. Totally reminded me of Meliodas and Ban when they arm wrestle. And poor Makarov when he was watching them.
And now it seems Meliodas and Merlin are on their way to Fiore for a visit.

Oh yeah! That was totally badass with Lucy and Erza working together to defeat the members of Eisenwald. Lol! And that was funny when they started arguing over who took out the most enemies. Kinda like how Meliodas and Ban sometimes have little playful banters like that.
And Lucy dispelling the Wind Barrier with Absolute Cancel was awesome. Shame Virgo didn't get to appear yet though, but I hope she will soon.
Lol! And Erza's jealous because Lucy power level is higher than hers.
And Natsu and Lucy both defeating Erigor together was also badass, and better than just Natsu fighting him by himself.
Oh dear, and now they have to go after Kageyama and stop him from using Lullaby to kill the guild masters.

Ooh, I like Lucy being able to analyze their power levels like that. And Lucy fighting Kageyama on the train after throwing Natsu out the window so he wouldn't be I be way with his motion sickness.
Lol! That was funny when Natsu bumped his head into Gray's after Natsu landed on the magic mobile that Erza was driving. And Erza scolding Natsu and Lucy for letting Kageyama get away even Lucy actually had a logical reason due to not wanting to destroy the train if she had continued to fight him. And I still don't get what's with Erza wanting Lucy to hit her just for leaving her and Natsu on the train.
And Lucy explaining how she knows about Lullaby. Also I'm glad she cleared that up to Erza that Merlin is not a dark mage and doesn't practice black magic.
Lol! And Mirajane delivering a message to Makarov at the Guild Master's Conference about Erza, Natsu, and Gray teaming up as Fairy Tail's strongest team and not to mention Lucy joining them as well. Poor Makarov and his aging heart.
Also I'm surprised Lucy didn't offer to take over driving or something, due to the SE plug using up a lot of Erza's magic power. But at least they still made it to Oshibana Station in time to confront the Eisenwald members of their plan.
And Lucy fighting Erigor to keep him from trying to leave after figuring out his plan. Too bad he still ended up escaping them anyway. Now Erza sent Natsu and Gray after Erigor, after getting the two idiots to stop their petty fighting each other first. While Erza and Lucy are now working together to deal with the rest of the Eisenwald members, except for Rayule and Kageyama who took off after Natsu and Gray to try to stop them from going after Erigor.

Oh yeah, I like the solo job that Lucy went on to take out that group of bandits. And I'm glad she didn't cause any collateral damage in the process. She deserved getting paid extra afterwards, having just enough to take care of her rent and still keep the rest for her personal needs.
And Erza returning to the guild after her job, and then challenging Lucy after hearing her admit to the rumors about her.
And now they're in Onibus in order to stop the Eisenwald guild. Lol! That's funny when Erza accidently leaves Natsu on the train after they arrive in Onibus. And I'm assuming Lucy stayed behind on her own accord just so she could confront Kageyama, which is what she just started to do after deflecting his attack away from the still motion sick Natsu.

Yes, I think Lucy should use Perfect Cube on her apartment to keep Natsu and Happy from barging in and making themselves at home like that. But at least she was nice enough to give them snacks just this once, while she was explaining to them about her Celestial Spirits and her Full Counter. Lol! And I like how she found the job request that Natsu dropped and didn't let them trick her into into it and instead just went along with the job.
And of course Natsu's motion sickness along the way. That was nice of Lucy to offer him a barf bag though.
And the whole showdown going down at Duke Everlue's mansion with the mission to destroy the book 'Daybreak', along with Lucy finding out the secret after reading it. I also like what Lucy did when she made Duke Everlue fall through the wooden floor in the storage room.
And then taking the book back to Kaby afterwards where the book title changes to 'Dear Kaby' which reveals the message to him from him father and keeps it and offers them the reward anyway which Natsu turns down and tells Kaby and his wife to go home as well as they were leaving.
Lol! And when they run into Gray on their way back to the Fairy Tail guild when he tells them that Erza is returning followed by Natsu, Happy, and Gray telling Lucy about Erza and who she is which they overexaggerate.

Is it just me or did the author put an aliens 2 or 3 reference in there” it’s game over man,game over

Uhh I get Lucy's power level because of she has the Celestial Spirits and the Seven Deadly Sins oh her side, but Erza...I think it would be best if you could..like, give her more so that she technically can still be the strong, weird, and powerful Erza Scarlet we all know and love. So please, at least raise her power level to be similar to Lucy's. At least a litte more. Uh, thank you and sorry, bye.

ahh...So why exactly are you making Lucy and Erza battle each other? Lucy in this fanfiction is stronger thanks to her linage, and what she learned from them, but Erza? She...She is amazing. I don't know, um..wouldn't it be better to not have them battle each other and destroy everything? I'm sorry, i'd just much perfer for them to stay as friends that are also teamates. Erza is like a big sister. At least I see it that way...sorry, i'll leave now.

Were you waiting for the manga to finish so as to not have to worry about needing to retcon anything?

really like this story. I do hope you update it again soon

Are you going to continue? Please do

P-please u-update a-author-s-san. I-I'm s-sorry!

The problem is that in accentuating the seven sins awesomeness (and by extinction Lucy's awesomeness) you have removed all of the potential plot/story. I can accept a few things being changed due to their presence, but when it exceeds the logical conclusion too much to be believable and starts taking over the story to the point where their is no story is where I draw the line. For example having Merlin not only takes away the potential Tower of heaven arc, it is also not explained why she interfered with the tower of heaven or why she was in the area to begin with (how she got involved). This removed interesting villains and potential plot from later arcs.

You could have explained their awesomeness with just rumors and had them demonstrate it in the story later as a last minute save against a big bad or something. You didn't need to eliminate potential plot elements such as the deliora arc or the nirvana arc by having them already have dealt with it. You have made the story less interesting by literally having entire chapters devoted to talking about their awesomeness.

Also one last nit pick; Merlin is an immortal from the demon clan and does not age. She would look the same (thus she wouldn't have white hair).

This meant to be constructive criticism of your story that you can use to improve later stories. This is not meant to hurt anyone's feelings.

this is a really good story

Not gonna lie, the concept for this story is interesting but when I started reading more into this fic, I couldn't help but get the feeling that Lucy is just a Mary Sue. For example, she was essentially born with incredible power called Sunshine but it was sealed away. Pretty much all of the great strength and power Lucy possesses here wasn't earned, it was given, this is also considering the fact that she's the child of the 7 deadly sins.

She also gets most of her personality from Meliodas, not very original, especially with the way she laughs, there's literally no point to that.

Sorry to say but I honestly find Canon Lucy more likable than this version, especially when you had this Lucy trash her Canon self going on and on about how "useless" she is and all that, imagine how different Fairy Tail would have ended up if Canon Lucy never joined them in the first place.

At first glance Canon Lucy seems worthless but to give you an example that she's not, Juvia would have likely stayed under the influence of that crazy death metal guy at the tower of heaven if Lucy didn't summon Aquarius at the perfect time to defeat him.

This version of Lucy you've created just seems too cocky/arrogant for her own good and is a major turnoff.