Garakowa: Restore the World (2015) on Netflix

Plot summary

The Box of Wisdom is a floating space without gravity, filled with lights of many colors. Inside it are multiple worlds and timelines that hold the memories of people who once existed. Dual and Dorothy are programs there, and their job is to enter those worlds and erase any that a virus has infected. Sensing a new virus, the two find a girl under attack and save her. She wakes with no memory of who she is and gives her name as Remo, saying she must return to the flower garden.