After the fight with Zane and sapphire zero hasn't figured out what happened that day.....now zero was in his room reading a book

Zero;okay so this book is about a man with 2 souls this is a strange book
Zero said as Sara runs into the room with a letter

Sara;zero this letter is for you!
Sara said as she hands him the letter

Zero;really who from
Zero said as he looks at the name and sees the name Sairaorg gremory
Zero signs than opens the letter up

Dear Mr.vern
My name is Sairaorg gremory and I know that you don't like the gremory name after the events with my cousin Rias gremory  but I do hope that you read this....I would like to have a sparing match with you and issei to see if I am worthy of being the gremory heir  I do hope that you come the fight will be held at the gremory arena

From Sairaorg gremory

Zero finishes reading the letter and signs
Zero;well at least he nice about it
Zero said as he gets up heads down stairs

Sara;so who is it from
Sara asked

Zero stops at his door
Zero;the heir to the gremories
Zero said as he heads down stairs

Sara;wait what!
Sara said as she follows him

(Time skip)

Zero and the others arrive at the arena to see rias and her peerage and Sairaorg

Darkness walks up to them
Darkness;well Mr.gremory thank you the invitation
Darkness said as she bows a little

Sairaorg;please Sairaorg is fine enough so you must be zero the infamous Zygarde emperor
Sairaorg said as zero walks up to him

Zero;yes that's me
Zero said

Sairaorg shook hands with zero
Sairaorg;it is very nice to meet you
Sairaorg said

Rouge;so who is he again?
Rouge said

Flare;that is Sairaorg gremory he lives in the bael domain
Flare said

Mai;I have a bad feeling
Mai said

Roxy;me to
Roxy said

Sairaorg sees plutia
Sairaorg;well who's this little one
Sairaorg said as plutia hides behind zero's wings

Zero;I'm sorry for her shyness it's just meeting new people and some events with some gremories you know
Zero said as he pays plutia's head gently

Sairaorg;I see I'm sorry if I scared her
Sairaorg said

Serena;well he is nicer than some gremory
Serena said

Issei was looking at their chest when Stacy gives out a darkening aura towards issei

Stacy;I will only warn you once stop staring at us the only that can look is zero
Stacy said as issei nods

Sara;damn I've never seen Stacy angry before
Sara said

Flare;agreed but she may have a little to far by saying that
Flare said

Rouge;yeah  I agree on that
Rouge said

Sairaorg; by the way the bael domain do enjoy the music that you make
Sairaorg said as he smiles

As Sairaorg said that everyone was shocked even rias and her group

Zero paled a bit
Zero's mind;shit I forgot about that!!!!!
Zero thought as darkness and the others were looking at him

Serena; um what is he talking about
Serena asked

Roxy;were you in a band please tell me you can play the drums!!!
Roxy asked excitedly

Rouge;we didn't know he sing
Rouge said

Mai; don't you remember how get to our house
Mai said

Zero;okay let's talk about this later so you wanted to fight me and ass hat over there
Zero said as he looks towards issei

Issei;hey!
Issei said

Sairaorg; yes but I want to fight you two one at a time if that's okay with you
Sairaorg said

Zero;hey you invited us so it's okay with me if you want to fight one at a time
Zero said

Sairaorg;thank you and I would like you to perform after our fight that's okay with you it's just that wish to see you perform in person
Sairaorg said

Zero;um sure I will
Zero said as he

Sairaorg; great I can't wait than
Sairaorg said as he goes off with issei to the arena center

(4 minutes later)

As they were watching issei and Sairaorg fight darkness decided to ask zero about what Sairaorg said earlier

Darkness;so you sold music
Darkness asked

Zero;yeah but that was a hobby I didn't think it would be popular in the bael domain
Zero said

Stacy;how much music did you make anyways
Stacy asked as she leans on zero as she holds plutia

Zero;um about 10
Zero said

Rouge;how come we haven't heard of it
Rouge said

Zero;you never asked and besides I never told anyone besides my old peerage
Zero said

Flare; he has a point there
Flare said as issei starts getting wrecked by Sairaorg

Roxy;go for his legs!!
Roxy said to Sairaorg

Mai;did that gremory know
Mai asked

Zero; no I she did she would have made me give all the money to here besides Sairaorg told everyone already oh looks like I'm up
Zero said as he gets up than jumps onto the field

Sairaorg;I do hope you go all out
Sairaorg said as he takes his stance

Zero;I was going to ask the same thing
Zero said as his armor appears on him

Sairaorg and zero run towards each other and they started to fight

As their punches collide with each other they create a crater underneath zero and Sairaorg

As zero was punching Sairaorg he felt like he was getting stronger by each punch

Zero's mind;what is this feeling
Zero thought

Zygarde;it's probably due to that transformation that you somehow broke through the limit that you had
Zygarde said

Rias;how can he match Sairaorg that should be impossible!
Rias said

After a few punches zero and Sairaorg were covered in bruises

Sairaorg;I see you have a strong aura around you zero how about we end this with one move
Sairaorg said as he gathers his energy into his fist

Zero;agreed
Zero said as he charges up his attack

Zero and Sairaorg charge at each other for the final time with all their strength they created a massive shock wave

Plutia;wow that's was awesome
Plutia said

Sara;yeah it was
Sara said

Rouge; they were fighting like it was life or death
Rouge said

Zero;that was a great fight not going to lie about that
Zero said as he and Sairaorg shake hands

Sairaorg;agreed zero may we fight again but for now you must leave my cousin is coming
Sairaorg said as Rias was walking towards them

Zero;very well I'll keep my promise and sing on a later date farewell
Zero said as he and the others head off before Rias could stop them