New Fan-fic?

I have been thinking for a while that I would like to start a new novel more focused on fighting to get some experience in that field too, however, I was hesitating due to having already 1 novel and people might not like it but after thinking it through I decided to ask you for your opinion. I have times where I feel completely unmotivated to write however, I recently discovered that it's not that I don't have a motivation to write but I don't have the motivation to write this novel. I mean, I enjoy this slice of life novel but sometimes the change would be good, that's why I would like to create a side novel that would be a in the world focused a bit more on fighting and whenever I felt unmotivated to write this novel I would simply write that side novel and this way I would perhaps regained motivation to write this novel much quicker. This novel would still be my main focus.

As for what kind of world and plot...

I am not very versed in the worlds with a complex plot because all I have done is that I watched all episodes of naruto and I still have no idea about the entire shinobi world and it's too complex for me...I just want this new novel to be for fun (mainly for me) it doesn't have to make too much sense.

Therefore I thought of taking Akame ga Kill world as background and transfer it into another world (mine). Basically I would let all important side characters keep their Teigu (weapons and abilities) but I would add OCs, new towns, and new much stronger kingdoms than the Empire. The original plot might change a bit even without MC's interference just to make it more convenient for me (like I said, only for fun nothing serious.) I have only watched the anime.

As for our MC... I have thought of letting him be reincarnated and born in the distinguished noble family that would be inside the Empire. His looks would be very similar to Akashi Seijūrō from Kuroko no Basket. His family would...not sure if I should explain everything here, let's just say that they wouldn't be THAT DARK (of course, there would be a lot of nasty things behind the scenes even for them) as other families, however, I also plan to make other noble families a bit less cruel as it's sometimes too much. There is no way that all people would be bad and cruel, there are always some people who are good or at least try to do lesser evil since there is no real "good" in that world. I think that this MC's background might make an interesting plot since the Empire's capital would be his home and his family would also be stationed there.

As for his personality...IDK something around Felix's personality but a bit more arrogant (Not like those young masters from cultivation worlds).

Now that we are talking about cultivation, it brings me to the MC's power system...To be honest, I am still not sure what should I give him, that's why I would appreciate your suggestions but please don't let it be too complex (I am too lazy to make deep research but if it catches my attention I will probably look more deeply into it.)

...That should be everything but I am sure that I forgot about something...whatever. The main info should be there and if you are interested please write a comment with suggestions on...well, everything. And if you aren't interested then you can just ignore this but feel free to express your opinion in the comments (not like I could stop you so I will give you my blessing instead xD).

I still have the feeling that I forgot about something but in case I remember something, I will write it into comments.

ALSO, DON'T FORGET: It's just a small project for fun and not something serious. If you like this CoeT fan-fic and think that it's good then you might prepare yourself that this new one will be much worse. So if you think that this fan-fic is on the edge of getting out of your library, I suggest not to even add the new one (in case I will really decide to create it but I really want to).

You can also suggest the other world than Akame Ga Kill but my time is a bit tight and I don't want to spend months of reading or watching something just to be able to write passable fan-fic.