Yaku comes off as a calmer and more mature version of Kusuri. She tends to act rather grandmotherly towards the others and seems to enjoy the youthful antics of the younger members of the family. She also is rather coy and tends to tease Rentarou. Yaku is also technologically illiterate and easily confused by modern technology. She refers to smartphones as planks, and buttons as peony flowers. She also seems to be afraid of cars. Like her granddaughter, she ends her sentences with "-nanoja" ("yes, yes" in the official translation), a more antiquated version. "Maybe someday you really will get me to take you seriously. Yes yes, I'll be looking forward to it." She's an immortal god witch and hanyuu's best friend. She's very kind and caring and strong and powerful. She loves japanese food and Japanese tea very much. She loves japanese tradition . She is not in love with Rentarou Aijou in this universe but is his ally and loves to teste him in a cute way. She hates ragnarok, featherine from higurashi,evil god witches, some demons, darkness and deaths. She is very strong and likes to use mainly fire attacks or her beautiful special moves. She finds takopi's innocence very cute and he's a good friend to her . She loves many kinds of music especially k-pop , japanese and English songs. She's very helpful and kind hearted to others and can be serious when she gets more angry or fights a serious fight.