Yashahime: Princess Half-Demon #5

Plot

Because of their part-demon heritage, Towa, Setsuna, and Moroha have all temporarily turned human—on the same night that yet another assassin aims to take the girls out! In light of that, Towa wrestles with her identity as a half-demon and wonders what her life could have been if she were a normal human girl. Then, she learns the truth behind the attack that caused their parents’ disappearance 14 years ago!