[Crossover] She Is the Protagonist's Younger Sister

After surviving three years of the apocalypse, Su Mu boards the “Homebound Train” with her spatial ability, bound for the small town she calls home. At every stop, the train requires her to clear an instance, and each successful clear rewards her with all kinds of strange skill cards.

In the instances, Su Mu transmigrates into roles including one of Snow White's dwarfs, Harry Potter, Lin Daiyu, and Sherlock's younger sister... She experiences a dazzling array of thrilling and surprising lives.

Harry Potter instance:

As night deepens beneath the bright moon, an unexpected love takes root. Even the most ruthless Dark Lord begins to bow his noble head...

CP: The seemingly innocent and pure little angel who is actually rational and strong inside (Su Mu) × the seemingly cruel and cold Dark Lord who is actually hopelessly lovestruck (Tom Riddle)

P.S. Amateur writing, with a golden finger.

I hope you'll show lots of support. Many thanks!

Theme: Give the characters in the book a happy ending~