Random Fanfic about Anime with a System

As me and Momo stepped through the portal,we ended up in Naruto.I wanted to go to One Piece first but decided to got to Naruto first so that we can learn to use chakra to walk on walker.This is to counter the weakness of the devil fruits.

As we walked through,I felt a weird but powerful energy being absorbed by me and Momo's bodies (Izza,what is that energy?)[Its sage chakra.Its attribute is Yin-Yang aka neutral so it would be easy to train sage mode.]

I told Momo that this was sage energy and told her to absorb it and test out if she can do anything.I of course bought some jutsus for us from the system.We tested for our chakra nature and Momo could use Water,Earth and Wind while I can use Fire,Lightning,Wind.

We then trained using these jutsus and it seemed as if they were tailor made for us as we easily learnt it.Then we started to learn how to control our chakra.I kind of cheated by buying the skill from the system.

Due to me gaining Chakra,I finally awaken my Rinnegan .I tested out the abilities while using a shadow clone to train Momo.

It took a while but Momo finally got the hang of it and could now even run on water.I congratulated her with a hug and she blushed.With that out of the way,I now open a portal to One Piece.I told her everything I knew about One Piece except the story line to keep it interesting for her.

When we arrive,we looked around and realized we were at the island Luffy met shanks.(Now,although I didn't change the timeline for Bnha too much,this time,I'll go out of my way to do so.I hated how Ace dies and hate Akainu and Blackbeard. Since water isn't a problem for us anymore,after Blackbeard kills Whitebeard,I'll kill him.Then I'll kill Akainu and take all 3 of the fruits to share with Momo and Shoto.)

I will get the Yami Yami no Mi and let them chose between the other two.With that said,we will have to spend a lot of time here.I look around using my Observation Haki and see Luffy on the boat with that filler character.I'm going to save Luffy as I don't want to see Shank's arm getting bitten off.

I felt it was bs that Shank forgot to use his Armament Haki although he may not have had it before now that i think of it but if so,how did he scare off the monster with his Haki?