Replacing Cao Cao is a good option too. He has theoretically the strongest Longinus. No CaoCao greatly weakens the chaos brigade since the hero faction might not exist anymore. It couod lead to lots of plot changes.
"Very well. Then I would like to replace Issei Hyoudou as the bearer of the Boosted Gear."
DxD: My Main Skill is Winning Hearts
Anime & Comics · Palmer_1998
Wasn’t it weapons beginner and sword user?
Theo felt the unseen experience points for the [Weapon User] and [Sword Beginner] traits accumulating.
I Became A Third Rate Villain In The Hero Academy
Fantasy · Zeom
Big *twin* hearts
'Theo really... likes women with big 'hearts'.'
I Became A Third Rate Villain In The Hero Academy
Fantasy · Zeom
Buku ini telah dihapus.
Do you remember the name??
Wait, Confess To Three Heroine!?
Highschool DxD: I have a Dimensional Travel System
Anime & Comics · heavenlydawn_
??
¶[Haki: None]
One Piece:The Lust System
Anime & Comics · Yass_Odyssey
But he also skipped several arcs himself including drum kingdom which had good medical books from the past and the munch-munch fruit from the corrupt king
Additionally, there's a possibility he'll receive a reward from the system after defeating the story's hero, And he'll gain something else too...
One Piece:The Lust System
Anime & Comics · Yass_Odyssey
YESSSSSSSS
A win is a win
"You used to tell me? Hmn... 'Baby please go harder!' that?"
DxD: Multiversal Therapist
Anime & Comics · Photosphere
could*
"Very well. Then I would like to replace Issei Hyoudou as the bearer of the Boosted Gear."
DxD: My Main Skill is Winning Hearts
Anime & Comics · Palmer_1998