Reborn as WEAKEST Character In The Game But I Can REWIND TIME

What the story is about

After waking up inside a dating-sim game as an insignificant background character, Fanua discovers he can rewind time and uses repeated attempts to protect Muian, a bullied student whose future self is destined to destroy the world. While trying to help her grow stronger and secure a way home, he must navigate dangerous nobles, deadly encounters, and the risks of relying on his unusual power.