[Crossover] Who Killed Mary Sue?

Welcome to Black and White Bear TV!

You guys must be tired of the usual show where high school students kill one another, right?

Well, here's a brand-new show! What kind of despair will the children of destiny, embodiments of hope, bring us? I can hardly wait! Upupupu!

After transmigrators invaded, the original timelines of five worlds fell apart.

The lives of the original children of destiny changed dramatically. The invaders destroyed their families, their friends, and everything they held dear.

Just as they sank into despair, they heard the voice of the world.

[Do you want to change your fate?]

Six contestants, their memories erased and returned to the beginning, were locked inside a completely sealed castle together with a strange girl.

A mysterious voice told them, "Escape from here, and you will recover what matters most to you."

A game with their fates at stake began.

The girl's body was found in a locked room. Who killed her?

And who will emerge victorious from the castle?

Player profiles revealed below

[Sawada Tsunayoshi, 25]

The mafia godfather of Italy, whose Guardians are all gravely injured or dead

(Returned to age 14, his second year of middle school)

[Kudo Shinichi, 24]

A genius Public Security Bureau chief who solves cases by any means necessary

(Returned to age 16, his first year of elementary school)

[Monkey D. Luffy, 22]

The fifth Emperor of the Sea, ruthless and decisive, with both his brothers dead

(Returned to age 17, when he entered the Grand Line)

[Isaac Foster, 28]

A reliable serial killer in red shorts, who killed his wife with his own hands to fulfill her wish

(Returned to age 20, during his unreliable days waiting for Ray on B2)

[Homura Akemi, 14?]

A magical girl who personally shattered her best friend Madoka Kaname's Soul Gem

(Returned to age 14, her second year of middle school)

[K Izuru Kamukura / Hajime Hinata, 22]

An artificial god who joined the forces of despair

(Returned to age 16, during his time in the Reserve Course)

*1 Locked-room escape game + murder mystery role-playing game. Mary Sue really was killed by one of the others.

*2 Characters in the if timeline may be somewhat out of character.

*3 The author's intelligence has its limits, so the tricks and locked-room designs may have some flaws.

Theme: The power of protection can see through all illusions.