Mikon no Futotcho Ninpu, Ijuu Suru ~Single mother no Machi~

Mitsuba lives with her mother and grandmother. Both women try to marry her off at all costs. Mitsuba doesn't see it that way. If she does end up expecting a child, she decides to raise it far from her toxic family. So off she goes to a small town with a reputation for treating single mothers well.

(Source: piccoma, translated)