Rebirth in Another World as the Undead Queen

System: Ding! Congratulations, you’ve inherited four Dark Altars and become the ruler of darkness!

Serea: Huh?

System: Ding! A suitable host has been selected. Implanting...

Serea: Hmm?

System: Ding! You’ve gained the starting class Blood Queen (Blood Altar) and the basic building unit, Blood Well!

Serea: Wait a minute!

System: Ding! You’ve gained your second class, Undead Queen (Death Altar), and the basic building unit, Plague Graveyard!

Serea: I said wait!

System: Ding! You’ve gained...

In short, this is the story of a girl who casually inherits four Dark Altars and is then shoved into another world by a rotten System (more or less).

Cute antics, comedy, adventure, conquest, and farming: it has everything you could want.