The Grandfather Who Reincarnated as a Girl Watches Over His Magical Girl Granddaughter (Short Version)

An era when humanity obtained new energy. Suddenly, a new disaster strikes humanity: "Monsters." In the face of this abnormal calamity that ordinary weapons cannot affect, the hope of humanity became delicate and innocent magical girls. The magical girls who risked their lives to fight monsters, but one day, a magical girl of unknown identity and mysterious appearance emerges. No one knew that it was, by some twist of fate, a grandfather who had become a magical girl just like his granddaughter. --- This is a story idea I came up with after thinking, "Let me try writing about TS reincarnation and combat-type magical girls." It is also posted on Hamelon. 5/20 - Transitioned to serialization. Please use the serialized version.