yakuzen yaku

Character from Kimi no Koto ga Dai Dai Dai Dai Daisuki na 100-nin no Kanojo. Aijou Rentarou's sixteenth girlfriend, and Yakuzen Kusuri's grandmother.

She is actually 89 years old, but looks very young due to a failed immortality drug. Unlike her granddaughter, she is unable to revert to her true age, because her version of the drug was even more potent than Kusuri's.