Bludgeoning Angel Dokuro-chan

Sakura Kusakabe, a junior high student, is destined to commit a crime 20 years in the future by developing a technology that would prevent women from growing past 12 years old, with immortality as a consequence. To prevent this, the angel Dokuro Mitsukai from the future is sent as an assassin, but instead of killing him, she decides to disrupt his life by constantly annoying him. Dokuro's actions are contrary to her original orders, prompting the angel Sabato to intervene and complete the mission. The resulting power struggle leads to chaos in Sakura's life.