Obaa-chan wa Idol

A 16-year-old girl named Yamada Momoka lives with her father, who works at a TV station, and her mother. Her grandmother, Yamada Tamaki, suffered an accident at the same TV station and was electrocuted, causing her to appear as a 16-year-old. Tamaki, now youthful yet still traditional, enrolls in Momoka’s high school. Her refined manners and cultured personality make her popular, leading to confusion as students begin to call Momoka "Old Yamada" and Tamaki "New Yamada." The situation becomes more complicated when a boy Momoka is interested in starts paying attention to Tamaki. The story includes several one-shots and an additional chapter.