Magic Warrior in Another World

When Kainagi Rurikawa, a third-year university student, returned home for the summer vacation, she found that she had become Mina, a village girl in a different world.

After living in the village for a while, she noticed that the world resembled the world of the sandbox MMORPG “Seventh Chronicle” that she had been playing. 

The Seventh Chronicle was a game with a high degree of freedom, set in a world called “Virtually” where various changes occur depending on the actions of the players.

this is the Synopsis:

Mina is bewildered by a world that is often out of sync with her knowledge.

Village life offered little information.

“Life in the village is too boring! I’m going to become an adventurer!”

She quickly puts aside in the corner of her mind what she wants to do in this world and why she came to this world, and using her knowledge and skills from her game days, Mina seems to be enjoying the adventurer’s life at her leisure today.

“The client’s house is this way!”

“Sis, wait for me!”

Mina-sama, not that way!

…involving his sister and a slave girl she picked up.