Choujikuu Robo Meguru

The story of this mecha anime centers on 13-year-old Meguru Tokio, whose ordinary life takes a dramatic turn when she encounters a mysterious young woman who shares her name. This enigmatic older Meguru, appearing to be in her late teens, possesses a bold and fiery personality that contrasts sharply with the younger Meguru's more reserved nature. When the older Meguru becomes entangled in a conflict with a shadowy organization, the younger Meguru finds herself unexpectedly drawn into the fray as well. As danger closes in from multiple directions, including a charismatic but dangerous operative named Rei, the two Megurus must learn to work together despite their differences. Their journey leads them to pilot a powerful dimensional robot, where they begin to uncover surprising connections between their pasts and futures. What starts as a chance encounter evolves into an epic adventure across time and space, where the bonds between these two unlikely allies will be tested against forces that threaten not just their lives, but the very fabric of time itself. (Source: ANN - edited for spoilers)