Under the mask (Amourshipping)

"Its a beautiful day outside,
Birds are singing,
Flowers are blooming,
On days like this people like you...
SHOULD BE BURING IN HELL!"
These were the last words Ash said before killing Giovanni killing himself in the procces.
5 years later a tournament is being held of as a memorial of Ash.
What happens to the group after they encounter a mysterious person?
What happens when the mysterious person finds out they still believe in Ash?
Who is Under the mask?

Many references to other things
Please don't kill me but Calem will be Serena boyfriend till she finds him cheating on her...