Actually. Ben has killed people.

Ben is half human and half Anodite. They would have sensed his hidden potential.

Ben has one hundred and 30 transformations unlocked.

What flash of green light? It doesn't do that anymore.

I can already see this is cancelled, but I'll tell you this:
Don't like Omniverse? Fine. It's kinda redundant to not include a whole series that's canon just because you don't like it, but it's your story not mine.
I suggest just using the Ben from 5 Years Later (non canon thing that happens after Omniverse, but is as, if not more serious than the past shows...I mean Cooper, a character who's been around since Ben was 10, freaking dies.) just so like, Omniverse still happened, but you don't HAVE to mention it if ONLY Ben is going to be in a certain world.

You are going to continue with your crossover of Ben 10 and The Seven Deadly Sins I hope to see you return to this story and if you allow me to give you some advice or help for the story you can contact me 1 of my ideas is the magic of the demon form, Giant , Hada, DIosa, etc and about how you could alter the original story

hello i am new reading your story and it is interesting since this Ben Tennyson arrived in Brittania but I see some errors in the plot

1-Meliodas cannot use his full counter with Ben's aliens because they are not magic, they are natural abilities

2-I do not know what is the potential that Ben has in his demonic equal to or greater than Meliodas but since he has no experience and is not willing to kill an example, it would be somewhat weaker (in the manga the young Escanor in his La Unico vs Meliodas form lost due to his inexperience would be the same case as Ben)

3-I think "Hellknight" should have its own magic or spells, an idea that occurred to me would be "Divine Assassin". This ability nullifies any regenerative or protective abilities of magical origin. An example if you cut Ban it would take time to heal as a normal human. Another example. The Demon King his ability The Ruler is canceled another example the "Perfect Cube" is destroyed by this ability. But Ben must use an item to activate this spell

4-you must write a little better I hope you resume this story

I would just like to point out that Full counter only works on magic. Methonosian flames and Crystalspien beans aren't magic, they're natural abilities.

I will continue this true story because i like it

Rising of the Shield Hero and Akame ga kill crossover
Naofumi x Akame
this will during the Rising of the Shield Hero storyline

Will you update in 2020?

I like your story.

Can't wait for the next chapter

loved the chapter

nice job