Where it is a compilation of oneshot of villainess and there is a story their where at the end both of the sisters became nun.
http://www.mangago.me/read-manga/though_i_may_be_a_villainess_i_ll_show_you_i_can_obtain_happiness/
Thank you so much uwu
Where it is a compilation of oneshot of villainess and there is a story their where at the end both of the sisters became nun.