The Age of Heroes (Haki user siblings x MHA)

Bio

So I noticed my story "born under hatred" was not well received. Maybe I suck at making somewhat original characters 🤷🏻‍♂️. Anyway I've considered this idea for a while. I hope you guys will enjoy this

So unlike "born under hatred" this story will actually focus more on the sister. I always liked pov storied, and since my fav one piece character is Shanks I want my male oc here to be like him. So the sister oc will be like luffy, the main character who goes to U.A. following the original storyline, while the brother is like Shanks/Rayleigh, a supporting character who helps his sister from the shadows, and is strong as hell.

Sister OC
Name: Summer Reyn
Age: 15
Quirk: Color of Observation (basic form)
This quirk gives the user advanced senses, capable of being completely aware of their surroundings and of anything that happens around them.

Forms of Haki Summer will have:
- Observation (Born with)
- Armament (Will show up in U.S.J and a more refined one in sports festival
- Advanced Observation (Future Sight): first shows up in hosu incident and will completely develop in hideout raid)
- Advanced Armament: Will show up in Provisional License exam

Looks:

(I don't own this picture, just found it in internet)

Hero Suit (I am debating which one I should pick)

Please let me know which one you think Summer should wear, and if she should go through a costume upgrade before the exam. If she should get an upgrade then please pick two.

Weapons
Will use a staff like Nami, but during internships she will change to Ecrisma like Nightwing

Facts about Summer:
- Born with Observation Haki
- Is the elder sister
- Didn't want to be a hero originally
- Wanted to be a doctor at first
- Will not have Conquerors (still under consideration, if you feel like she should have it let me know when she should awaken it.)

Brother OC
Name: Shuichi Reyn (name of shanks voice actor, Shūichi Ikeda)
Age: 13
Quirk: Ryou
Energy derived from the users own willpower manifests as power (honestly always felt like this was a somewhat manageable explanation for haki)

Forms of Haki:
- Conquerors Haki (As strong as Shanks. Please expect me to recreate many of shanks haki scenes cause I freakin love them)
- Advanced Armament Haki (Ryou or whatever you wanna call it,
- Advanced Observation Haki (Like shanks) (Since haki is only in one family and not a worldwide power, I don't think we need the whole "Killer of Observation thing")
- Advanced Conqueror's coating

Looks:

Notes:
- Was born with Armament Haki
- Is the younger brother
- Not really a "Hero Costume but when in fights he will wear what shanks usually does.
- Lost his left arm (Yes I am making this guy as close to shanks as possible) during a villain attack
- wants to be a teacher (hey he has to be something, can't just make him sail on a ship n be Yonko)
- originally wanted to be a hero but not anymore

Note: to fit in with the whole quirk science the Reyn family Quirk is Haki, but each member is only born with one of them which will be their expertise. The have to train to unlock the second haki, and like the One Piece Verse, Conqueror's Haki is rare, only appearing at least in one or two members of the family every generation.

Note 2: The Reyn family is somewhat well known for their Quirk. Those who have conquerors are especially famous. Decided to do this for plot later down the road. Since Haki is a family quirk n not some learnable power had to make it like this cause for the life of me I could not find a way to explain why AFO will have Haki