Her life was nothing but a sinking into the dark water, and it was her sister who pulled her up from her depression.
After following her sister on the path to immortality, Mingmaru thought that she would never allow herself to be abandoned again.
As a result, the unparalleled gentle person had a taciturn knife that was unique to her.
(Updated from time to time, maybe ten days and a half)
Purpose: live a good life