One Piece: Madness of Regret - Chapter 38: The girl with red hair(1)

Raised to be the perfect soldier for battle, Alexander had risen to be the youngest S rank Merc. After attaining the strength he so desired, his adoptive father had forcefully made him leave the battlefield. Alex unwilling to acknowledge his retirement was given a mission by his adoptive father. "The mission objective is to find a girl in the public High School you'll be attending and protect her."Triggered by the words mission objective, Alexander who had a 100% completion rate, accepted the conditions of the mission. Follow Alexander in his weird, almost comedic high school life.Alex's father: Hey Alex, did you get to school properly?Alex: Affirmative, I reached the designated place on time.Alex's father:So why did you call?Alex: The target I have picked is situated in classroom 1-B, while I'm in classroom 1-A. Asking permission to threaten the Principal into placing me in classroom 1-BAlex's father: DENIED!...

Transmigrating to a lawless person and then directly upgrading to a little brat’s stepmother. Xiao Ting said, “Crap, there’s no need to even give birth to a child. God, I love you so much …”

- Description from Novelupdates

He was a Martial Arts prodigy, a master of using poisons!He descended the mountain to search for his junior sister but unexpectedly became the School Beauty's bodyguard… From then on, a demon-like student was born! He pursued the School Beauty, took down bullies, and was revered as the supreme ruler of the city! He cultivated Ancient Martial Arts, annihilated formidable enemies, and swept across all directions to ascend to the Peak.

To Producers, the two of them couldn’t be more drastically different voice actors.