Sisters with Superpowers

[This novel contains a lot of giantess (GTS) content, including trampling. If you find it uncomfortable, please stop reading. This time, the protagonists are female characters.]

An older sister working odd jobs, a younger sister eating instant noodles in a rented room, and a life going nowhere. Everything changes when they find a little toy: weapons unlike anything in the ordinary world, and all sorts of strange abilities.

“Weakening spell.”

“Gigantification.”

“Your goddess is about to take the stage!”